Question

It takes 86 joules of energy to raise a box 2 meters using the pulley setup shown above.

Without the pulley, the box can be raised 2 meters using only 82 joules of energy. What could explain this 4-joule difference?

Answer 1

when raising the box using the pulley ,4 joules of mechanical energy are destroyed

Answer 2

the answer to your question is the answer i need