Combined display of all available logs of UO Physics Demonstration Catalog. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

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• 12:10, 6 April 2022 Physdemo talk contribs created page Centripetal Force 2 (Created page with "{{NewDemo|subject=Mechanics|topic=Rotational Dynamics|file1=centrip.gif}} Spin the tennis ball, and the scale will read the centripetal acceleration. The technique should be practiced before using in class. '''Location: ''' * SH. E-0")
• 12:10, 6 April 2022 Physdemo talk contribs created page Centripetal Force 1 (Created page with "{{NewDemo|subject=Mechanics|topic=Rotational Dynamics|file1=Centripetal_Force-1.gif}} Spinning of the central assembly will cause the bob to swing outward, this force being countered by the spring. Use the pointer to locate the radius of the motion. By then attaching masses to the stationary bob to bring it back over the pointer, the centripetal force can be calculated. '''Location:''' * Sh. O-1")
• 12:09, 6 April 2022 Physdemo talk contribs created page Mystery Wands (Created page with "{{NewDemo|subject=Mechanics|topic=Rotational Dynamics|file1=Mystery_Wands.gif}} This is a matching set of aluminum tubes of equal mass. However, one has it's internal weights located near the center while the other has them at the ends. They can be spun together about a small rod or in the hands to show that they have different movements of inertia. '''Location:''' * Sh. B-2")
• 12:09, 6 April 2022 Physdemo talk contribs created page Torque Bar (Created page with "{{NewDemo|subject=Mechanics|topic=Rotational Dynamics|file1=Torque_Bar.gif}} A way to give students a hands on understanding of the lever arm. Most everyone can pick up two kilos in the hole nearest the handles. Few can do so at the furthest end. Caution: Those who try too hard to hold up the heavy mass at the far end may find that while their grip may hold their skin may not. Prep room staff have received very nasty blisters from this. '''Location:''' * Between Sh....")
• 12:08, 6 April 2022 Physdemo talk contribs created page Soup Can Race (Created page with "{{NewDemo|subject=Mechanics|topic=Rotational Dynamics|file1=Soup_Can_Race.gif}} Campbell's Bean and Bacon soup has a distinctively different moment of inertia than Chicken Noodle. '''Location: ''' * Sh. B-2")
• 11:35, 6 April 2022 Physdemo talk contribs created page Cylinder Race (Created page with "{{NewDemo|subject=Mechanics|topic=Rotational Dynamics|file1=Cylinder_Race.gif}} These three cylinders -- one solid wood, one solid brass, and the other an aluminum disk -- have the same outer radius. They are set rolling together but the solid one will move ahead demonstrating its lower moment of inertia. '''Location:''' * Cylinders: Dr. 9 * Ramp: Next to Sh. A")
• 11:33, 6 April 2022 Physdemo talk contribs created page Centripetal Hoops (Created page with "{{NewDemo|subject=Mechanics|topic=Rotational Dynamics|file1=Centripetal_hoops_1.jpeg|file2=Centripetal_hoop_2.jpeg}} An apparatus showing the relationship between angular velocity and centripetal force. Before plugging in Make sure switch is off, and hoop is tighten down. Location: Motors: Sh. B-4 Access: Dr. 17")
• 11:24, 6 April 2022 Physdemo talk contribs created page Impulse Pendulum (Created page with "{{NewDemo|subject=Mechanics|topic=Impulse and Linear Momentum|file1=Impulse_Pendulum_better.jpeg}} Everyone is probably familiar with the Happy/Sad Balls or the Bounce No Bounce balls available from toy stores or Arbor Scientific. Once I bought a set that included one ball where one side bounced and the other did not; two half balls glued together. I used this half happy ball to demonstrate the different impulses delivered by a bouncing ball and a ball that does not bou...")
• 11:22, 6 April 2022 Physdemo talk contribs created page Egg Toss (Created page with "{{NewDemo|subject=Mechanics|topic=Impulse and Linear Momentum|file1=Egg_Toss.gif}} A raw egg is thrown at a loosely held sheet. Because of the length of the time of interaction, the force applied to the egg as it is stopped is small and does not break the egg. The same egg dropped onto a hard surface (preferable inside a beaker) will break due to short time of interaction. '''Location:''' (NEED LOCATIONS) * Part 1: Location 1 * Part 2: Location 2")
• 11:21, 6 April 2022 Physdemo talk contribs created page Happy and Sad Balls (Created page with "{{NewDemo|subject=Mechanics|topic=Impulse and Linear Momentum|file1=Happy_and_Sad_Balls.gif}} Two apparently identical rubber balls. However one has a very low coefficient of restitution giving it no bounce. '''Location:''' * Dr. 8")
• 11:20, 6 April 2022 Physdemo talk contribs created page File:Rat Mobile 2.jpeg
• 11:20, 6 April 2022 Physdemo talk contribs uploaded File:Rat Mobile 2.jpeg
• 11:19, 6 April 2022 Physdemo talk contribs created page File:Rat Mobile real.jpeg
• 11:19, 6 April 2022 Physdemo talk contribs uploaded File:Rat Mobile real.jpeg
• 11:18, 6 April 2022 Physdemo talk contribs created page Rat Mobile (Created page with "{{NewDemo|subject=Mechanics|topic=Impulse and Linear Momentum|file1=Rat_Mobile.jpeg|file2=Rat_Mobile_2.jpeg}} A mouse trap is attached to a cart. When the string that holds the trap open is burnt through, it throws the weighted bag putting the light cart into motion as well. '''Location:''' * Drawer 15")
• 11:17, 6 April 2022 Physdemo talk contribs created page Ping Pong Ball vs Super Ball Drop (Created page with "{{NewDemo|subject=Mechanics|topic=Impulse and Linear Momentum|file1=Super_Ball.gif}} If a ping pong ball bounces 3 ft. and a large superball 5 ft. what will happen if you drop a ping pong ball on top of a large super ball? Answer: Be sure that you have a very high ceiling. '''Location: ''' * Dr. 8")
• 11:16, 6 April 2022 Physdemo talk contribs created page File:Newton Balls Better2.jpeg
• 11:16, 6 April 2022 Physdemo talk contribs uploaded File:Newton Balls Better2.jpeg
• 11:16, 6 April 2022 Physdemo talk contribs created page Newton's Balls (Created page with "{{NewDemo|subject=Mechanics|topic=Impulse and Linear Momentum|file1=Newtons_Balls_Bigger.JPG|file2=Newton_Balls_Better2.JPG}} This is a permanently assembled apparatus, but the balls will more than likely have to be aligned for optimum results. '''Location: ''' *Sh. O-1")
• 11:06, 6 April 2022 Physdemo talk contribs created page Spring Launcher (Created page with "{{NewDemo|subject=Mechanics|topic=Energy|file1=Spring_Launcher.gif}} Drop a ring stand with a spring and a mass. Upon impact the mass will be shot upwards. Or just push down on the spring. '''Location: ''' * Lab Stand: Next to Sh. O * Spring: Dr. 17 * Cement cylinder: Dr. 17 * Duct Tape: Sh. R1 *")
• 11:05, 6 April 2022 Physdemo talk contribs created page File:Bowling ball pendulum.gif
• 11:05, 6 April 2022 Physdemo talk contribs uploaded File:Bowling ball pendulum.gif
• 11:04, 6 April 2022 Physdemo talk contribs created page Bowling Ball Pendulum (Created page with "{{NewDemo|subject=Mechanics|topic=Energy|file1=Bowling_ball_pendulum.gif}} A special Demo for rooms 100 and 110 Will. which hangs a bowling ball from the ceiling. Hold the ball next to you nose and let go. On its return the ball will come uncomfortably close but will not hit so long as you Do not move your head. A beaker of water may be used for those who find this too risky. '''Location: ''' * Bowling Ball: Sh. A-4 * Rope for Rm. 110: Sh. A-3 * Rope for Rm. 100: Alrea...")
• 11:04, 6 April 2022 Physdemo talk contribs created page Loop the Loop (Created page with "{{NewDemo|subject=Mechanics|topic=Energy|file1=Loop_the_loop_better.jpeg}} A simple way to show conservation of energy. Only when the ball starts above the height of the hoop will the ball make it all the way around. '''Location: ''' * Sh. B-3")
• 11:03, 6 April 2022 Physdemo talk contribs created page Stopped Pendulum (Created page with "{{NewDemo|subject=Mechanics|topic=Energy|file1=Stopped_Pendulum.gif}} A pendulum with a heavy mass (around 500g) is hung from a rod. A shorter rod is hung parallel below the first rod. When the pendulum is released, it will swing, and if it has enough momentum, when the string shortens, it will swing all the way around the bottom rod. '''Location: ''' * Mass and string: Shelf A * Rod Stand: Shelf O * Rods: DR. 102")
• 11:01, 6 April 2022 Physdemo talk contribs created page Simultaneous Drop of Two Masses (Created page with "{{NewDemo|subject=Mechanics|topic=Gravity|file1=Simultaneous_Drop.gif}} A steel ball and a wood ball with metal insert are held aloft by the two poles of an electromagnet. The two balls are dropped simultaneously by cutting the current to the magnet. Dropping the balls onto a hard surface shows that they fall at the same rate since only a single sound of impact is heard. '''Location:''' * Sh. B-3") Tag: Visual edit: Switched
• 11:00, 6 April 2022 Physdemo talk contribs created page Falling Cup and Masses (Created page with "{{NewDemo|subject=Mechanics|topic=Gravity|file1=Falling_Cup_and_Masses.gif}} A clear plastic cup with a rubber band attached to the interior. Two masses can be hung over the edge, stretching the rubber band. When the cup is dropped, there is no longer any downward force on the masses relative to the cup. The rubber band then pulls the masses inside the cup. '''Location:''' * Sh. A-3") Tag: Visual edit: Switched
• 10:59, 6 April 2022 Physdemo talk contribs created page Potential Well (Created page with "{{NewDemo|subject=Mechanics|topic=Gravity|file1=Potential_Well.gif}} Two pieces of clear plastic within frames that sit on the overhead. One has a single divot, the other two. Small balls rolled over the surface will follow a potential curve. See also the demo "Curved Space" under Astronomy-Gravitation. '''Location: ''' *Dr. 13") Tag: Visual edit: Switched
• 10:59, 6 April 2022 Physdemo talk contribs created page Feather and Nickel (Created page with "{{NewDemo|subject=Mechanics|topic=Gravity|file1=Feather_and_Nickel.gif}} A tube with a feather and a piece of metal. When evacuated, it can easily be shown that objects fall at a rate independent of their mass. '''Location:''' * Sh. A-3") Tag: Visual edit: Switched
• 10:53, 6 April 2022 Physdemo talk contribs created page Newton's Laws Videos (Created page with "The following Newton's Laws Videos are available: * Newton's Second Law Return to Mechanics Videos") Tag: Visual edit
• 10:52, 6 April 2022 Physdemo talk contribs created page Statics Videos (Created page with "The following Statics Videos are available: * Extended Bodies at Rest * Solution to Video Setup") Tag: Visual edit
• 10:50, 6 April 2022 Physdemo talk contribs created page Rotational Dynamics Videos (Created page with "The following Rotational Dynamics Videos are available: * Circular Normal Force * Hoop and Solid Disc Race * Linear and Rotational Kinetic Energy * Two Ball Race Return to Mechanics Videos") Tag: Visual edit
• 10:38, 6 April 2022 Physdemo talk contribs created page Kinematics Videos (Created page with "The following Kinematics Videos are available: * Acceleration * Distance vs. Displacement * Instantaneous Velocity Tangent Line * Position vs. Time * Position vs. Time Slope * Velocity vs. Time Return to Mechanics Videos") Tag: Visual edit
• 10:37, 6 April 2022 Physdemo talk contribs created page Impulse and Linear Momentum Videos (Created page with "The following Impulse and Linear Momentum Videos are available: * Conservation of Momentum - Elastic * Conservation of Momentum - Inelastic * Impulse: Bounce Vs. No Bounce * Impulse: Change in Momentum * Impulse: Change in Time Return to Mechanics Videos") Tag: Visual edit
• 10:36, 6 April 2022 Physdemo talk contribs created page Gravity Videos (Created page with "The following Gravity Videos are available: * Book and Paper Drop * Free Fall Forces * Free Fall Weightlessness Return to Mechanics Videos") Tag: Visual edit
• 10:35, 6 April 2022 Physdemo talk contribs created page Energy Videos (Created page with "The following Energy Videos are available: * Conservation of Energy * Work-Energy Theorem") Tag: Visual edit
• 10:32, 6 April 2022 Physdemo talk contribs created page Tension in a Rope (Created page with "{{NewDemo|subject=Mechanics|topic=Statics|file1=TensionRope.gif}} Set a large dial spring scale in line with a mass on a spring to provide a quantitative description of tension. '''Location:''' * Pulley's: Dr. 1 & 3 * Scales: Dr. 10")
• 10:07, 6 April 2022 Physdemo talk contribs created page Resolution of Forces (Created page with "{{NewDemo|subject=Mechanics|topic=Statics|file1=Resolution_Of_Forces.gif}} A demonstration of the components of gravitational forces on an inclined plane. When the ramp is removed, the cart remains in position. '''Location:''' *Inclined Plane: Sh. A-1 *Dynamic Cart (Nakamura 1kg): Dr. 25 *Pulleys: Dr. 2 & 3")
• 09:51, 6 April 2022 Physdemo talk contribs moved page Kinematics in 1-3 Dimensions to Kinematics
• 09:46, 6 April 2022 Physdemo talk contribs created page Painter and Bucket (Created page with "{{NewDemo|subject=Mechanics|topic=Statics|file1=Painter_01.jpg|file2=Painter_02.jpg|file3=Painter_And_Bucket.gif}} The tension of the string is doubled when one end is attached to a rigid object. Using some tape where the spring scale hangs on the rod helps it stay in place. '''Location:''' * Masses: Sh. A-4 * Spring Scale: Dr. 10 * Stand: Between Sh. O and M * Rod & Rod Clamp: Dr. 122 & 123")
• 09:45, 6 April 2022 Physdemo talk contribs created page Pressure (Force per unit Area) (Created page with "{{NewDemo|subject=Mechanics|topic=Statics|file1=Pressure_01.jpg|file2=Pressure_02.jpg|Pressure=Force_Per_Area.gif}} A wood board with a needle in one end. A balloon will support the flat end but not the thin end. A bed of nails is also available. '''Location:''' * Board with Needle: Dr. 30 * Balloons: Dr. 30 * Bed of Nails: Next to Sh. F")
• 09:44, 6 April 2022 Physdemo talk contribs created page Loaded Beam (Created page with "{{NewDemo|subject=Mechanics|topic=Statics|file1=Loaded_Beam.jpg}} Use the T-bar supports for the scales, Place the scales equidistant from the ends. Tare the scales after the beam is positioned. The reading on each scale will depend upon where the mass is located on the beam. '''Location:''' *Scales and T-bar supports: Sh. A-2 *Masses: Sh. A-4")
• 09:43, 6 April 2022 Physdemo talk contribs created page Center of Mass 3 (Created page with "{{NewDemo|subject=Mechanics|topic=Statics|file1=COM_04.jpg}} The 5 blue boards can be lined up to balance on the edge of the surface. If the lines match up, the center of mass will be over the surface which means that it won't tip over. Follow the directions written on the boards to set it up. '''Location:''' * Blue Boards: Left of Sh. A")
• 09:42, 6 April 2022 Physdemo talk contribs created page Center of Mass 2 (Created page with "{{NewDemo|subject=Mechanics|topic=Statics|file1=Center_of_Mass-2.gif}} Support the ends of a rod or meter stick with your fingers. Slowly move your hands together. Your fingers will meet at the center of mass. Now suspend a mass off of one end of the rod and do it again. '''Location:''' * Meter Sticks: Wall O-4")
• 09:41, 6 April 2022 Physdemo talk contribs created page Center of Mass (Created page with "{{NewDemo|subject=Mechanics|topic=Statics|file1=Center_of_Mass.gif|file2=COM_01.jpg|file3=COM_02.jpg|file4=COM_03.jpg}} Various objects can be balanced on the center of mass. Other objects can be hung from different points and lines, determined by a hanging bob, are drawn on the object . Where the lines intersect is the center of mass. '''Location:''' *Center of Mass Objects: Dr. 5 & Next to Sh. A")
• 09:39, 6 April 2022 Physdemo talk contribs created page Meterstick Balance (Created page with "{{NewDemo|subject=Mechanics|topic=Statics|file1=Balance.jpg|file2=Meterstick_Balance.gif}} A set of masses and supports designed for use with a meter stick to show the summation of torques. '''Location:''' *Masses: Sh. A-2 *Support base: Sh. A-2 *Wood meter sticks: Wall O-4")
• 09:20, 6 April 2022 Physdemo talk contribs created page Fire Extinguisher and Skateboard Rocket (Created page with "{{NewDemo|subject=Mechanics|topic=Newton's Laws|file1=Skate_Board.gif}} A Carbon dioxide fire extinguisher is retrofitted to allow a narrow high velocity stream of CO2 to be emitted. Conservation of momentum pushes the person in the opposite direction. '''Location:''' *Fire extinguishers: Sh. G-1 *Skateboard: Next to Sh. A")
• 09:19, 6 April 2022 Physdemo talk contribs created page CO2 Cylinder Rocket (Created page with "{{NewDemo|subject=Mechanics|topic=Newton's Laws|file1=CO2.jpg|file2=Rocket-CO2_Cylinder.gif}} A small CO2 cartridge is held by this apparatus which spins when the cartridge is discharged. To discharge the CO2 cartridge, use the black cylindrical device pictured in the photo. Pull back on the knob until it locks, place the other end against the CO2 cartridge as it is held in the apparatus, and then push the button on the side of the black cylinder to discharge it. Hold i...")
• 09:19, 6 April 2022 Physdemo talk contribs created page Ping Pong Ball/Super Ball Drop (Created page with "{{NewDemo|subject=Mechanics|topic=Newton's Laws|file1=Ball.jpg|file2=Super_Ball.gif}} If a ping pong ball bounces 3 ft. and a large superball 5 ft. what will happen if you drop a ping pong ball on top of a large super ball? Answer: Be sure that you have a very high ceiling. '''Location:''' * Balls: Dr. 6")
• 09:18, 6 April 2022 Physdemo talk contribs created page Collision Cars (Created page with "{{NewDemo|subject=Mechanics|topic=Newton's Laws|file1=}} The air track system or dynamic carts system can be setup for elastic and inelastic collisions. Can be demonstrated qualitatively or quantitatively with a computer setup for data acquisition. '''Location:''' * See Air Track or Dynamic Carts")

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