Question

A body of mass 4 kg is lifted to a height of 5 meters. What is the potential energy gained by the body? (Take \( g = 9.8 \, \text{m/s}^2 \))

• A. 20 J
• B. 49 J
• C. 98 J
• D. 196 J

Hint:

Gravitational potential energy is directly proportional to mass and height: \( PE = mgh \). Always use standard \( g = 9.8 \, \text{m/s}^2 \) unless mentioned otherwise.