A basketball player balances a ball on his finger. The ball is rotating with an initial angular
Question:
A basketball player balances a ball on his finger. The ball is rotating with an initial angular speed of 4 rad/s. He then uses his hand to push along the edge of the ball to make it rotate faster. His hand is in contact with the ball for /2 rad and afterwards the ball has angular speed 6 rad/s. What was the angular acceleration due to the player's hand?
Amy is sitting on one side of a see-saw. She is located 1 m away from the pivot point, and her mass is 70kg. Bob's mass is 100kg, how far from the pivot point on the opposite side of the see-saw should he sit to balance the see-saw perfectly?
A disk (Idisk = 12MR2) of mass 200kg and radius 2m is rotating at rad/s. A small object of mass 40 kg then collides with and sticks to the disk at a location halfway between the center and the edge.
(a) What is the new angular speed? (b) Was the collision elastic or inelastic?