Two masses are connecte by a ligh string over a light, frictionless pulley the table surface that m2 is on is also frictionless. Apply the work-energy theorem for this system to calculate the speed of the masses after the masses have moved a distance delta x starting from rest. Note that the work of the tensions drop out. Use the result to obtain the acceleration of the system.(adsbygoogle = window.adsbygoogle || []).push({});

I've looked at this problem for a while now and I just don't know how to get the work of the tensions to drop out given that if m_{1}is that mass that's hanging and the forces working on it is F= T_{1}-m_{1}g and the forces working on the mass on the table (m_{2}) is N-mg=ma=0 and T_{2}-m_{2}g=F...

yeah. I understand that F=ma and that W=dF= 1/2mv^{2}

but I just can't seem to understand how the tensions fall out of the equasion..

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# Homework Help: Work-energy theorem in relation to the velocity of two masses

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