Question

simple machine choice
you get the choice between the lever, inclined plane, and pulley to lift a really heavyweight onto
a rack that sits 10cm above the ground.

simple machine	description
inclined plane	ramp has a length of 25cm and a height of 5cm
pulley	fixed, single pulley with a ma of 1

12 which machine should you choose based on the information provided in the table?

note: the formula for mechanical advantage is on the attached reference sheet.

a the lever; it has a mechanical advantage of 4 and it will get the weight to the necessary height.
b the pulley; it is easier to pull a rope down than to lift the heavy weight up.
c all of the simple machines have the same advantage so it doesnt matter which one is chosen.
d the inclined plane; it has the highest mechanical advantage of the three machines.

Explanation:

Answer:

A. The lever; it has a mechanical advantage of 4 and it will get the weight to the necessary height.