A box is being pulled across a rough surface with nonzero co

A box is being pulled across a rough surface (with non-zero coefficient of kinetic friction) at a constant velocity by a force F_p that Ls oriented at an angle of theta to the horizontal, as depicted in the figure. What is the magnitude of the force F_p? mu_k mg/(cos theta+ mu_k sin theta) mu_k mg/(cos theta - mu_k sin theta) mu_k mg/sin theta mu_k mg (mu_k cos theta - sin theta) mu_k mg/cos theta

Solution

Fpcos(thetha) = Friction = uk*(mg-Fpsin(thetha))

=> Fp = ukmg/(cos(thetha)+uk*sin(thetha)   

option A