9.Q. 9

Expert-verifiedFound in: Page 227

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

A ball on a string travels once around a circle with a circumference of 2.0 m. The tension in the string is 5.0 N. How much work is done by tension?

Work done by the tension is zero.

A ball on a string travels once around a circle with a circumference of 2.0 m. The tension in the string is 5.0 N.

The work done is the multiplication of the force and displacement in the same direction.

In this work and force are at 90^{o} angle.

This means the there is no force component in the direction of displacement.

So the work done is W = F x 0 =0.

Alternatively

We can say

So the work done is Zero.

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