It takes 86 joules of energy to raise 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?
A. When raising the box using the pulley, 4 joules of mechanical energy are transformed into water.
B. When raising the box using the pulley, 4 joules of mechanical energy are converted into heat energy due to friction.
C. When raising the box using the pulley, 4 joules of mechanical energy are destroyed.
D. When using the box using the pulley,4 joules of mechanical energy are br

Question

It takes 86 joules of energy to raise 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?
A. When raising the box using the pulley, 4 joules of mechanical energy are transformed into water.
B. When raising the box using the pulley, 4 joules of mechanical energy are converted into heat energy due to friction.
C. When raising the box using the pulley, 4 joules of mechanical energy are destroyed.
D. When using the box using the pulley,4 joules of mechanical energy are br

anonymous · Answer

*broken down into protons, neutrons, and electrons.

anonymous · Answer

Friction.

kittiwitti1 · Answer

You can edit the question, you know.
But @douglaswinslowcooper is correct, friction impedes the upward motion, so the heat generated from that is converted energy.

anonymous · Answer

Thankss' @douglaswinslowcooper and @kittiwitti1