PIRA Code(s): 1Q20.99 Set up time:3 minutes Operation: Take the arm and put it in the slots on the trebuchet. Put the projectile into the green pouch and place the string around the end of the rod. Stick the pin through the three eyelets on he arm and base of the apparatus. Then load the counterweight onto the end of the arm near the wheels. Pull the string to launch the trebuchet. Physics and Science Concepts: Mechanics, Rotational Energy Safety: Do not attempt to catch the projectile. Stay out of the projectile’s path. Stand clear of the swinging arm. The trebuchet is capable of flinging projectiles 20 meters or more, so choose projectiles and counterweights wisely. Safety glasses must be worn when operating.
PIRA Code(s): 1Q50.60 Set up time:2 minutes Operation: Use the string or turn the rotor with your thumb to start the gyroscope spinning. Take care to hold the gyroscope and metal hold in place relative to the top block of wood. Then, spin the wooden block, stop it, and reverse the direction of the spin. The gyroscope will do a spin flip. Physics and Science Concepts: Rotational dynamics, Mechanics Safety: None
PIRA Code(s): 6A40.99 Set up time:none Operation: Shine a focused beam of light at one of the facets of the prism. Light is refracted and split into its constituent wavelengths (i.e. Colors of the rainbow). These can be used with various other optical experiments. Physics and Science Concepts: Optics, Refraction Safety: Edges and corners may be sharp
PIRA Code(s): 1Q30.60 Set up time:10 minutes Operation: Spin the frame and watch the two balls move outwards. For the plexiglass demo, squirt green liquid (or pour) into the frame so that the liquid is at least an inch deep. Then, plug in the cord. Physics and Science Concepts: Centrifugal force Safety: Make sure objects and people are well clear of the spinning frame. Wear safety goggles during operation.