A 10-N force is applied tangent to a wheel of radius R, while a 15-N force is applied tangent to a wheel of radius R/3 mounted on top of the previous wheel, as pictured here. The torque acting on the system is
A) 5R in the negative x direction.
B) 5R in the positive x direction.
C) 5R in the negative y direction.
D) 5R in the positive y direction.
E) 5R in the xz plane.

Question

A 10-N force is applied tangent to a wheel of radius R, while a 15-N force is applied tangent to a wheel of radius R/3 mounted on top of the previous wheel, as pictured here. The torque acting on the system is 
A) 5R in the negative x direction. 
B) 5R in the positive x direction. 
C) 5R in the negative y direction. 
D) 5R in the positive y direction. 
E) 5R in the xz plane.

Quizplus · Accepted Answer

The Answer of A 10-N force is applied tangent to a wheel of radius R, while a 15-N force is applied tangent to a wheel of radius R/3 mounted on top of the previous wheel, as pictured here. The torque acting on the system is 
A) 5R in the negative x direction. 
B) 5R in the positive x direction. 
C) 5R in the negative y direction. 
D) 5R in the positive y direction. 
E) 5R in the xz plane.

A 10-N Force Is Applied Tangent to a Wheel of Radius