Three Children Are Pulling on a Rotatable Platform on a Playground

Multiple Choice

Three children are pulling on a rotatable platform on a playground. The platform has a radius of 3.80 m. In the picture, two children are pulling with equal forces of 40.0 N in an attempt to make the platform rotate clockwise. The third child applies a force of 60 N as shown. What is the net torque on the platform? Note: "ccw" is counterclockwise and "cw" is clockwise.

A) 76 N . m, ccw
B) 76 N . m, cw
C) 290 N . m, ccw
D) 290 N . m, cw
E) 0 N . m