Please help! A merry-go-round rotates with constant angular speed. As a rider moves from the rim of the merry-go-round toward the center, what happens to the magnitude of total centripetal force that must be exerted on him?
a. It increases.
b.It decreases.
c.It is not zero, but remains the same.
d. It's always zero.
e.It increases or decreases, depending on the direction of rotation.

Question

Please help! A merry-go-round rotates with constant angular speed. As a rider moves from the rim of the merry-go-round toward the center, what happens to the magnitude of total centripetal force that must be exerted on him?
a. It increases.                   
  b.It decreases.    
 c.It is not zero, but remains the same.       
d. It's always zero.                            
e.It increases or decreases, depending on the direction of rotation.

xishem · Answer

Do you happen to know what the formula for the centripetal acceleration of an object is?