A screw has a mechanical advantage of 12.5. How much force must you

apply to the screw so that it has an output force of 1000 N?

The force that must be applied is 80N

Step-by-step explanation:

Here, we are talking about simple machines; a screw is an example of a simple machine. Other examples include lever, nail puller, wheelbarrow, crank, etc.

Here, we are talking about simple machines; a screw is an example of a simple machine. Other examples include lever, nail puller, wheelbarrow, crank, gear, etc.

Simple machines are devices that can be used to multiply or augment a force that we apply – often at the expense of a distance through which we apply the force. 

The mechanical advantage for any simple machine is the ratio of output to input force magnitudes. That is,

Mechanical advantage (MA) = Force output / Force input

From the question,

Mechanical advantage (MA) = 12.5

Force output = 1000N

Force that must be applied, that is, force input = ??

Therefore,

12.5 = 1000N/ Force input

Force input = 1000N/12.5

Force input = 80N

Hence, the force that must be applied is 80N

80 N, I just took the test

if you mean

then it's c. 8, -7/3

but if you mean

then it is