1. Determine the work done (in foot-pounds) by a crane lifting an 18,000-pound truck 48 inches.
2. A mover exerts a horizontal force of 25 pounds on a crate as it is pushed up a ramp that is 12 feet long and inclined
at an angle of 20° above the horizontal. Find the work done in pushing the crate.
3. Forces with magnitudes of 250 pounds and 130 pounds act on an object at angles 45° and −60°, respectively, with
the positive x-axis. Find the direction and magnitude of the resultant of these forces.
4. A 500-pound motorcycle is headed up a hill inclined at 12°. What force is required to keep the motorcycle from
rolling down the hill when stopped at a red light?
5. A force of 85 pounds, exerted at an angle of 60° with the horizontal, is required to slide an object across the floor.
Determine the work done by sliding the object 10 feet.
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