the picture shows a boulder being lifted by a lever. the boulder could be lifted much higher by —\na moving…

the picture shows a boulder being lifted by a lever. the boulder could be lifted much higher by —\na moving the fulcrum to the right\nb using a shorter lever arm\nc replacing the fulcrum with a smaller cylinder\nd pushing the boulder up the board

the picture shows a boulder being lifted by a lever. the boulder could be lifted much higher by —\na moving the fulcrum to the right\nb using a shorter lever arm\nc replacing the fulcrum with a smaller cylinder\nd pushing the boulder up the board

Answer

Brief Explanations:

In a lever - system, the height to which a load (the boulder) can be lifted depends on the position of the fulcrum. Moving the fulcrum to the right increases the length of the effort - arm relative to the load - arm. This allows for a greater mechanical advantage and thus the boulder can be lifted higher. A shorter lever arm would make it harder to lift the boulder at all. Replacing the fulcrum with a smaller cylinder doesn't affect the height of lift directly. Pushing the boulder up the board is not related to the lever's function for lifting.

Answer:

A. moving the fulcrum to the right