PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems
Problem
Consider two solid cylinders, A and B. A has a radius of 0.20 m and a mass of 1.25 kg, and B has a radius of 0.80 m and a mass of 20.0 kg. Both cylinders are released at the same time, from rest, to roll down a sloping surface, without slipping, so that they both end up 0.20 m below where they began.
(1) a Show that both cylinders will reach the bottom of the sloping surface travelling at the same speed.
(2) b** Calculate the final speed of the cylinders at the bottom of the sloping surface.
(3) c** Which famous experiment does this make you think of?
(4) d** How might you explain this to a young physics student?