Homework Help: Physics

Posted by Ben on Monday, February 21, 2011 at 5:40pm.

In the figure below, two blocks are connected over a pulley. The mass of block A is 12 kg, and the coefficient of kinetic friction between A and the incline is 0.22. Angle θ is 30°. Block A slides down the incline at constant speed. What is the mass of block B?

Physics - bobpursley, Monday, February 21, 2011 at 6:02pm
well, the force down the incline+friction= massB*g

12g*sinTheta+mu*12g*cosTheta=massB*g

solve for massB
Physics - kyle, Tuesday, February 22, 2011 at 10:04pm
you actually have to subtract the frictional force not add it

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