Question

Please help solve the problems.

A boy and a girl are riding a merry-go-round which is turning at a constant rate. The boy is near the outer edge, while the girl is closer to the center. Who has the greater tangential acceleration? A. the boy B, the girl C. Both have the same non-zero tangential acceleration. D. Both have zero tangential acceleration. E. There is not enough information given to answer the question. A solid disk is released from rest and rolls without slipping down an inclined plane that makes an angle of 25.00 with the horizontal. What is the speed of the disk after it has rolled 3.00 m, measured along the plane? The table below contains moments of inertia for four objects. Please choose the appropriate one for the problem. Note: The objects are all rotated about their center. A. 2.04 m/s B. 3.53 m/s C. 4.07 m/s D.5.71 m/s E. 6.29 m/s

Answer 1

Answer 2

ANSWER :

First Question :

D. Both have zero tangential acceleration.

Merry-go-round is rotating at constant rate, hence angular acceleration is zero. Therefore tangential acceleration is also zero for both, the boy and the girl.