Mechanical Comprehension Practice Test 3

A worker pushes a heavy lawnmower across a yard. If he exerts a constant force of 32 newtons over a distance of 12.5 meters, how much work is performed?

In a rope-pulling game, Team A exerts a pulling force of 115 newtons to the left, while Team B exerts a pulling force of 128 newtons to the right. What is the magnitude of the resulting net force?

If a student expends 90 joules of work to slide a heavy backpack across a smooth floor over a distance of 4.5 meters, what force did she apply to the backpack?

A seesaw lever has a fulcrum in the center with an effort arm of 8 feet on the right. On the left side, two weights are placed: a 20 lb weight placed 8 feet from the fulcrum and a 40 lb weight placed 4 feet from the fulcrum. What total downward force must be applied on the right end (8 ft away) to balance the seesaw?

A hydraulic jack with a mechanical advantage of 4.2 is operated by applying an input force of 85 newtons. What is the maximum output force the jack can exert to raise a load?

When a baseball is hit high into the outfield air, which primary force acts continuously to pull it back down toward the ground?

An industrial winch performs 48,000 joules of work to pull a heavy cargo container over a distance of 16 meters. What magnitude of force was exerted by the winch?

A warehouse forklift performs 63,000 joules of work to push a large wooden crate across a factory floor over a distance of 35 meters. How much force did the forklift apply?

An operator applies force to the small input piston of a hydraulic press. The output piston on the opposite side has a surface area eight times larger than the input piston. According to Pascal's principle, how does the output force compare to the input force?

A construction worker uses an inclined plane ramp to push a 95-newton crate into a delivery truck. If the ramp provides a mechanical advantage of 6, what total output force is exerted on the crate?