You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed?

Question

You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed?
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bobpursley · Answer

You have to overcome friction and gravity gravity down the plane:mg*SinTheta friction: mg*mu*cosTheta add them.

Anonymous · Answer

Thanks

Anonymous · Answer

I did that but it gives me wrong answer

Anonymous · Answer

for friction, it's actually M*G*ucostheta