Question

If a machine decreases the distance an object moves, it must also _____.

Answer 1

increase the force needed to move the object

Explanation:

If a machine decreases the distance an object moves, it must also increase the force need to move the object.

A machine is a device that is used to do work with a little energy input.

  Work done = force x distance

We see that to do more work, a lot of force must be applied to move a body through a greater distance.

If the distance is reduced;  

      Distance = $\frac{Work done {force}$

More force must be applied to measure up for the distance and make the machine more efficient.

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