A block of weight 200N is pulled along a rough horizontal surface at constant speed by a force of 100N acting at an angle 30^(@) above the horizontal. The coefficient of kinetic friction between the block and the surface is

A block of weight 200N is pulled along a rough horizontal surface at c

1.	A block of weight 200N is pulled along a rough horizontal surface at constant speed by a force of 100N acting at an angle 30^(@) above the horizontal. The coefficient of kinetic friction between the block and the surface is
Answer» 0.43 0.58 0.75 0.83 Solution :`F COS theta=f_(k), f_(k)=mu_(k)N, N=mg-F sin theta`