Question

A wagon is pulled along level ground by exerting a force of 26 26 pounds on a handle that makes an angle of 30 degrees 30° with the horizontal. How much work is done pulling the wagon 90 90 ​feet?

Answer 1

Work is calculated by multiplying the force exerted with the distance covered by the object. The force and the displacement should be parallel. In this item, we have to calculate first the horizontal component of force. 
                           x-component of force = (26 lbs)(cos 30°)
                                                              = 22.52 lbs
Multiplying the calculated value by the displacement of 90 ft will give us the final answer of 2026.50 lb.ft.