Which is a result of using a machine?

a. The mechanical advantage makes the work output greater than the work input.

b. The machine can put out force without having any force applied to it.

c. A large force can be exerted through a long distance to have a small force exerted through a short distance.

d. A large force can be exerted through a short distance to have a small force exerted through a long distance.

Question

Physics

Casey Waller

4 June, 19:21

Which is a result of using a machine?

a. The mechanical advantage makes the work output greater than the work input.

b. The machine can put out force without having any force applied to it.

c. A large force can be exerted through a long distance to have a small force exerted through a short distance.

d. A large force can be exerted through a short distance to have a small force exerted through a long distance.

+2

Answers (1)

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Darius Boone · Answer 1

D.

The energy into the system is the same as that out of the system. Its just that a small force is applied over a larger distance at one end while a large force is applied over a smaller distance at the other end. Keep in mind:

Work = Force x displacement

The work remains constant.