Andy and Charlie are riding a merry-go-round. Andy rides at a point on the rim o

Question

Andy and Charlie are riding a merry-go-round. Andy rides at a point on the rim of the circular platform, three times farther from the center of the platform than is riding. When the merry-go-round is rotating at constant angular speed w, which following statements is correct? Andy has zero angular acceleration. The angular speed of Andy is three times that of Charlie. The angular speed of Andy is nine times that of Charlie. The angular acceleration of Andy nine times that of Charlie. In a mid-air collision between a ping pong ball and a baseball, which experiences the larger change in momentum? Each will experience an equal (and opposite) change in momentum. The ping pong ball will have a larger change in momentum. The baseball will have a larger change in momentum. Which ever had a larger initial velocity will have a larger change in momentum.

Explanation / Answer

1.g) rA = 3*rc , wA = wc

v = rw

vA/vc = rA/rc = 3

correct option is (B)

1.h) from conservation of momentum inital momentum of syste = final momentum of system

correct option is (A)

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