Three Children Are Pulling on a Rotatable Platform on a Playground.The

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