A man pulls a sled along a rough horizontal surface by applying a constant force at an angle $\theta$above the horizontal. In pulling the sled a horizontal distance d, the work done by the man is:

Question

A man pulls a sled along a rough horizontal surface by applying a constant force  at an angle $\theta$above the horizontal. In pulling the sled a horizontal distance d, the work done by the man is:

Quizplus · Accepted Answer

The work done by a constant force is given by W = Fd cosθ, where F is the magnitude of the force, d is the displacement, and θ is the angle between the force and the displacement. In this case, the force is applied at an angle θ = F1F1F1S1F1F1F10 above the horizontal. Therefore, the work done by the man is W = (11eaafba_af47_61a8_a7a5_c54e5db7e10b_TB3976_11)(d)cos F1F1F1S1F1F1F10. The correct choice is B.

A Man Pulls a Sled Along a Rough Horizontal Surface θ\thetaθ

A Man Pulls a Sled Along a Rough Horizontal Surface $\theta$