Question

Which is the best statement of the Law of Conservation of Energy?(1 point)
Responses

The amount of energy put out by a simple machine is always less than the amount of energy put into the machine.
The amount of energy put out by a simple machine is always less than the amount of energy put into the machine.

The amount of energy put out by a simple machine depends on its efficiency.
The amount of energy put out by a simple machine depends on its efficiency.

The amount of energy put into a simple machine should be conserved.
The amount of energy put into a simple machine should be conserved.

The amount of energy put out by a simple machine must equal the amount of energy put into the machine.

Answer 1

The best statement of the Law of Conservation of Energy from the provided options is:

**The amount of energy put out by a simple machine must equal the amount of energy put into the machine.**

This statement effectively captures the essence of the Law of Conservation of Energy, which states that energy cannot be created or destroyed, only transformed or transferred. However, in practical scenarios, energy losses (such as friction) mean that the useful output is often less than the input.