A workman wants to push a box up an inclined plane of 20.0 degrees. If the box weighs 300.0 Newtons, how much force does he have to exert to make the block start to move?
(This problem involves friction and needs a "mu," use mus = 0.350 and muk = 0.250.)

Question

A workman wants to push a box up an inclined plane of 20.0 degrees. If the box weighs 300.0 Newtons, how much force does he have to exert to make the block start to move? 
(This problem involves friction and needs a "mu," use mus = 0.350 and muk = 0.250.)

anonymous · Answer

Please help ;(

anonymous · Answer

$$F = mgsin \theta + \mu mgcos \theta $$