(adsbygoogle = window.adsbygoogle || []).push({}); 1.A 2.0 kg mass is spun in a horizontal circle at the end of a 0.66 m long string at a speed of 12 m/s. What is the work done by tension when the mass has gone halfway around the circle?

A) 576 J B) 1810 J C) 904 J D) 0

2. Relevant equations

Fc=mv^2/r and w=f*d

3. The attempt at a solution

Well I first calculated the centripital force using the first equation. (2kg)(12m/s^2)/.66 and got 4.36N. The I used work=f*d and got 8.17. This is not even an answer. Any sugestions?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Work Done by Tension of Mass on a string

**Physics Forums | Science Articles, Homework Help, Discussion**