Question

An object of mass m is raised to a height 4h above ground level. Find the potential energy of the object.
1. 8 mgh
2. ¼ mgh
3. 4 mgh
4. 0.4 mgh

Answer 1

Correct Answer - Option 3 : 4 mgh

The correct answer is 4 mgh.

• Potential energy is the stored energy of position possessed by an object.
• Potential Energy (P_e) = m × g × h
  • m represents the mass of the object.
  • h represents the height of the object.
  • g represents the gravitational field strength (9.8 N/kg on Earth).
• Here given height is 4h.
  So the P_e of the object = m × g × 4h = 4 mgh.