A man pushes a lawnmower of mass 50kg at a constant velocity over a horizontal lawn. He exerts a push of 200N on the handle at an angle of 60° to the horizontal and the lawnmower moves to the left.

Question

The question is determined the frictional force on the mower

Answer 1

the velocity is constant
... so the frictional force equals the horizontal pushing force

frictional force = 200 cos(60º) ... Newtons