21. (Rolling, Torque, and Angular Momentum) A ball of radius r rolls on the inside of...

Transcribed Image Text:

21. (Rolling, Torque, and Angular Momentum) A ball of radius r rolls on the inside of a track of radius R (see figure below). 90° If the ball starts from rest at the vertical edge of the track, what will be its speed when it reaches the lowest point of the track, rolling without slipping? 10 Answer: vB = V#9(R – r) 21. (Rolling, Torque, and Angular Momentum) A ball of radius r rolls on the inside of a track of radius R (see figure below). 90° If the ball starts from rest at the vertical edge of the track, what will be its speed when it reaches the lowest point of the track, rolling without slipping? 10 Answer: vB = V#9(R – r)