Question

how is the input force different from the output force?
the input force is applied to the simple machine, and the output force is the force the simple machine applies to an object.
the input force is all of the energy applied to the situation, and the output force is the result.
the input force is applied to the problem, and the output force is the movement that results.
the output force is applied to the simple machine, and the input force is the force the simple machine applies to an object.

Explanation:

In the context of simple machines, the input force is the force that is applied to the machine. The output force is the force that the machine exerts on an object. For example, when using a lever, the force you apply (input force) causes the lever to exert a force (output force) on the load.

Answer:

The input force is applied to the simple machine, and the output force is the force the simple machine applies to an object.