Question

The potential energy of a system increases if work is done

• A. upon the system by a non-conservative force
• B. by the system against a conservative force
• C. by the system against a non-conservative force
• D. upon the system by a conservative force

Hint:

Conservative forces, like gravity or electrostatic forces, lead to changes in potential energy when work is done.

Answer 1

The Correct Option is D

Step 1: Understand the relationship between work and potential energy.
The potential energy of a system increases when work is done upon the system by a conservative force, such as gravity or electrostatic force.
Step 2: Conclusion.
Thus, the correct answer is when work is done upon the system by a conservative force.
Final Answer: \[ \boxed{\text{upon the system by a conservative force}} \]