I have attached a picture of what I am describing below (Edit: also a link if the attachment didn't go through):(adsbygoogle = window.adsbygoogle || []).push({});

http://img368.imageshack.us/img368/949/mech036fig012zi.jpg [Broken]

If a mass m1 sits on top of a frictionless table (assume the pulley is as well), attached to a massless string with a mass m2 on the other end hanging off the table, what is the accel. and tension in the string assuming that m1=2m2?

I figured that if it were attached to a wall (rather than m1), the tension would be |T|=m_{2}g. However, since the mass m1 will move, this is what I did:

[tex]\vec{a}=\frac{F}{m}=\frac{m_2g}{m_2+2m_2}=\frac{g}{3}[/tex]

[tex]T=m\vec{a}=\frac{m_2g}{3}[/tex]

Am I correct?

Thanks for the help

Alex

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# Homework Help: Tension and Pulleys

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