Question Detail

PHY 101 Work, Energy and Power Objective Question

Question

What is a common example of a nonconservative force?
Options
A Gravitational force
B Spring force
C Kinetic friction
Correct Answer
D Electrostatic force
Correct Answer

Option C is the correct answer.

Detailed Explanation

Kinetic friction is a classic example of a nonconservative force. The work done by friction depends on the path length (longer path = more work), and it dissipates mechanical energy into thermal energy (heat), which cannot be fully recovered as macroscopic kinetic or potential energy.

Hint

This type of force always opposes motion and converts mechanical energy into heat.

Question Info