Read please example 2 of http://cnx.org/content/m14060/latest/ .(adsbygoogle = window.adsbygoogle || []).push({});

P1

P2

On picture 2 there are those two tension labeled by T which are equal. Why equal?

And shouldn't they exert just torque? I know we are considering the pulley to be massless, so no torques. So is it correct to consider those two tensions applied at the center of mass of the pulley?

Thanks in advance for your clarification.

**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!

# Cable friction and tension problem

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