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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?

A.
When raising the box using the pulley, 4 joules of mechanical energy are broken down into protons, neutrons, and electrons.
B.
When raising the box using the pulley, 4 joules of mechanical energy are transformed into water.
C.
When raising the box using the pulley, 4 joules of mechanical energy are converted into heat energy due to friction.
D.
When raising the box using the pulley, 4 joules of mechanical energy are destroyed.

User Aun
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2 Answers

5 votes

Answer:

The answer is C, when raising the box using the pulley, 4 joules of mechanical energy are converted into heat energy due to friction. :)

Step-by-step explanation:

User LearnRPG
by
7.1k points
4 votes

Answer:

the correct answer is c

User Dondondon
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