Calculate the magnitude of the force exerted by the spring on mass Mb=300g, moving in a circle of radius r=22cm. The mass makes 10 revolutions in 4 seconds. Determine the mass m, suspended over the pulley which stretch the spring by the same amount as during the rotation.(adsbygoogle = window.adsbygoogle || []).push({});

For the magnitude of the force I used the equation V=2(pi)f*r. Then I plugged in f=4/10 and r=22 cm. Then I used F=mv^2/R and calculated for Force. Is this correct?

For the second part of the question I do not understand how to do it. :grumpy:

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

Dismiss Notice

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: Calculate the magnitude of the force exerted by the spring

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