Kinetic friction, pulley, inclined plane

[llewis3]

Homework Statement

blocks 1 and 2 of masses m1 and m2 respectively, are connected by a light string. these blocks are further connected to a block of mass M by another light string that passes over a pulley of negligible mass and friction. blocks 1 and 2 move with constant velocity v down the inclined plane, which makes an angle (theta) with the horizontal. the kinetic frictional force on block 1 is f and that on block 2 is 2f.

Determine the coefficient of kinetic friction between the inclined plane and block 1.

Homework Equations

F=ma
F=uN

The Attempt at a Solution

N=mgsin(theta)+mg

i don't know where to go from there

 

[phinds]

i don't know where to go from there

Start by making a force diagram and showing what work you have done so far. That way, we can see where you are stuck. ALWAYS start this kind of problem by making a force diagram (aka free-body diagram).