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Q. 18

Expert-verified
Found in: Page 331

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# In FIGURE EX12.18, what is the net torque about the axle?

The net torque on the pulley about the axle is .

Direction of torque is clockwise.

See the step by step solution

## Step 1. Given information

Torque by a force is defined as ,

Here is measured counterclockwise from the vector to the vector.

## Step 2. Explanation

The net torque on the pulley about the axle is the torque due to the 30 N force plus the torque due to the 20 N force:

The net torque on the pulley about the axle is

Direction of torque is clockwise.