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

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

When raising the box using the pulley, 4 joules of mechanical energy are converted into heat energy due to friction.

When raising the box using the pulley, 4 joules of mechanical energy are transformed into water.

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

When raising the box using the pulley, 4 joules of mechanical energy are broken

Question

It takes 86 joules of energy to raise a box 2 meters using the pulley setup 

Without the pulley, the box can be raised 2 meters using only 82 joules of energy. What could explain this 4-joule difference?

When raising the box using the pulley, 4 joules of mechanical energy are converted into heat energy due to friction.

When raising the box using the pulley, 4 joules of mechanical energy are transformed into water.

When raising the box using the pulley, 4 joules of mechanical energy are destroyed.

When raising the box using the pulley, 4 joules of mechanical energy are broken

anonymous · Answer

https://media.studyisland.com/pics/108120pulley.jpg

anonymous · Answer

@paki plz help

anonymous · Answer

@paki plz your the only one i have to help me

anonymous · Answer

it was When raising the box using the pulley, 4 joules of mechanical energy are converted into heat energy due to friction.