1. Two children with same mass in a merry-go-round are at different distance fro

Question

1. Two children with same mass in a merry-go-round are at different distance from the center, Child A closer than B.

a) which one has higher tangential speed?

b) which one takes longer to complete on revolution?

c) which one has the higher centripetal force required to go around the circle?

2. Using equation Fc=mv^2/r (centripetal force equation) dervie an equation that relates the velocity of the object to the radius, mass and applied force.

The answers I got for question 1 is a) child A b) child B c) child B ... But I'm not very sure. Also I don't understand the wordings in question 2. Thanks.

Explanation / Answer

a) B has more speed
b) takes equal time
c) B

use F=mw2r

w=v/r

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