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

Question

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

Quizplus · Accepted Answer

The Answer of 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

Three Children Are Pulling on a Rotatable Platform on a Playground