physics
posted by sam .
suppose that a 70.0kg box is pulled by a 400.N force at an angle of 30 degrees to the horizontal. the coefficient of sliding friction is 0.500. what is the acceleration of the box?

physics 
bobpursley
the horizontal force is 400cos30
vertical force=400Sin30
net apparent weight=70g400sin30
acceleration=nethorizonalforce/mass
= (400cos30mu(70g400sin30)/70
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