PIRA Code(s): 1D15.45 Set up time:1 minute Operation: Place balls of equal mass and size at the top of the tracks, one at the cycloid, one at the parabola, and one at the straight track. Let the balls roll down, the cycloid ball will arrive first. Then, place two balls on the cycloid track, one at the top and one a little ways down. The two balls will reach the end at the same time. Physics and Science Concepts: Motion in Two Dimensions Safety: None
PIRA Code(s): 1D60.30 Set up time:10 minutes Operation: Set up two ring stands about 8 feet apart. Put the blow gun in the clamp on one stand with the power cords to the inside of the set up. Attach the pole with the magnet to the other ring stand. Place the ball into the blow gun. Switch the power supply on which connects the circuit and then place the monkey (band aid box) on to the magnet, upside down. Make sure the blow gun is aimed directly at the broad side of the monkey. Now, blow into the blow gun to release the ball and break the circuit, thus causing the monkey to fall. The ball should hit the monkey as it falls. Physics and Science Concepts: Projectile Motion, Gravity, and Mechanics Safety: Do not turn power supply on before inserting the ball into the blow gun, due to possible electrocution.
Not all pieces (ring stand, 5 V ½ Amp DC power supply, and clamps) are in the kit, these items need to be acquired.
PIRA Code(s): 1G20.45 Set up time:2 minutes Operation: Hold a slinky in your hand high enough so that when it falls it will not touch the floor. Still holding the top of the slinky, let the rest drop down towards the ground. Physics and Science Concepts: Newton’s Second Law Safety: Ends of slinky may be sharp or become tangled
PIRA Code(s): 1M20.30 Set up time:5 minutes Operation: Set the empty friction box on the incline with weights attached to the string on the other side of the pulley so that the box slides forward. Then, gradually increase the angle of the plane until the box and the weights reach equilibrium. Physics and Science Concepts: Equilibrium of forces, Mechanics, Work and Energy Safety: None
PIRA Code(s): 1Q40.23 Set up time:1 minute Operation: Place the shaft of the device into the hole and tighten the screw. Then, plug in the motor and turn on the red switch. When spun, the hoops will show oblation, the balls on the governor will move outwards, and the liquid in the glass sphere will move to the edge of the sphere. Physics and Science Concepts: Rotational Dynamics, Centrifugal Force, Oblation Safety: Wear goggles when running the apparatus and keep hands away from the belt.
PIRA Code(s): 1Q40.30, 1Q50.24 Set up time:3 minutes Operation: Stand on the stool as it remains still. Have someone start the motor and place the bicycle wheel next to it to get it to start spinning. Take the spinning wheel in your hands and turn the wheel in a horizontal position and you should spin. When the wheel is placed vertical again, you will spin the opposite direction.
Use the motor to start the wheel spinning. Hold on to the cord attached to the axle and the wheel will remain vertical. Physics and Science Concepts: Mechanics, Rotational Dynamics Safety: Do not get items caught in the motor or the spokes of the tire. Hold wheel out from the body as far as possible
PIRA Code(s): 1Q40.40 Set up time:5 minutes Operation: Place the train on the track. Plug the track into the variac and start the train by moving the dial. Physics and Science Concepts: Mechanics, Angular Momentum, Rotational Dynamics, Angular Momentum, Relative Motion Safety: Watch for sparks from the train. Maintain a cautious distance from the wheel.
PIRA Code(s): 1Q40.42 Set up time:1 minute Operation: Instructions included in box. Must obtain ring stand and clamp from 9C40.71 and 9C40.72, respectively. A known weight attached to a string around the wheel torques the wheel a constant amount. Physics and Science Concepts: Moment of Inertia, Mechanics Safety: Use caution around spinning wheel.
PIRA Code(s): 1Q40.80 Set up time:5 minutes Operation: Partially fill flask with water. Attach flask by string to ring stand. Then, use a Bunsen burner or a torch to heat the flask. The flask should rotate as the steam emerges from the arm. Physics and Science Concepts: Rotational Dynamics, Conservation of Angular Momentum, Safety: Use caution around Bunsen burner or torch. Do not overheat the glass as it may shatter. Eye protection should be worn. The torch can be acquired from the machine shop if necessary.
PIRA Code(s): 1Q50.30 Set up time:1 minute Operation: Rotational Dynamics, Mechanics, Gyroscopic Motion Physics and Science Concepts: Rotational Dynamics, Mechanics, Gyroscopic Motion Safety: The central gyroscope is quite heavy and can pinch fingers.
PIRA Code(s): 2B30.30 Set up time:3 minutes Operation: Place the two halves together. Put the vacuum pump on the valve and evacuate the air inside. Try to separate the pieces. Vacuum pump not included; it must be obtained from demo 3B30.30. Physics and Science Concepts: Fluid Mechanics, Statics of Fluids Safety: None
PIRA Code(s): 3B10.30 Set up time:none Operation: Displace the rod at one end to create a torsion pulse or wave. The other end can be left free to move, fixed in place, or critically damped. To damp the model, clip the damping cup to the last rod on one end to get an inverse reflex wave. The damping clip on the rod ends the wave entirely. Physics and Science Concepts: Torsion Waves, Waves and Oscillations Safety: None