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April 20, 2014

Homework Help: college physics

Posted by kathy on Wednesday, May 23, 2012 at 4:17pm.

Two blocks of mass m1 = 3.00 kg and m2 = 7.50 kg are connected by a mass less string that passes over a frictionless pulley. The inclines are frictionless. So this is like a triangle with a pulley at the top and both blocks resting at either side of the pulley each at a 35 degree angle.
(a) Find the magnitude of acceleration of each block.
(b) Find the tension in the string.

I found the acceleration to be 2.4 since
a=[m2sin(theta2)-m1sin(theta1)]g/(m1=m2)

For the tension I thought that I could just use m1a=T-m1gsin(theta1) but it keeps coming out wrong.

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