An object of a given weight is pulled at a constant velocity with a given force by a rope that makes a given a

Question

An object of a given weight is pulled at a constant velocity with a given force by a rope that makes a given angle of with the horizontal. Calculate (a) the
horizontal component of the force exerted by the rope and (b) the force of friction between the sled and the ground.

Answer 1

Call the force F and the angle th
and the force of friction is f
the sled has mass m and gravity is g

Since velocity is constant, a=0

a) F*cos(th)-(m*g-F*sin(th))*µk=0

b) f=(m*g-F*sin(th))*µk in the opposite direction as the motion of the sled.

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