How much work is done by tension?

[layla2525]

Homework Statement

Let's say I tie a string to a clicker and swing it in a horizontal circle around my head at constant speed. How much work is done by the tension force due to the string when it goes all the way around one full circle?

A. No work is done.

B. The work equals the tension force times the radius.

C. The work equals the tension force times the diameter.

D. The work equals the tension force times the circumference.

Homework Equations

The Attempt at a Solution

I am leaning towards D.

 

[ehild]

How do you calculate the work of a force F if the displacement D encloses an angle θ with the force?

ehild