Question

The gravitational potential energy of a 2 kg object at a height of 5 m above the surface of the Earth is?

• A. 100 J
• B. 150 J
• C. 50 J
• D. 25 J

Hint:

Gravitational potential energy depends on the height of the object above the Earth's surface and is directly proportional to both mass and height.

Answer 1

The Correct Option is A

The gravitational potential energy (GPE) is given by the formula: \[ U = mgh \] Where: - \( m = 2 \, \text{kg} \) is the mass of the object, - \( g = 9.8 \, \text{m/s}^2 \) is the acceleration due to gravity, - \( h = 5 \, \text{m} \) is the height above the surface. Now, calculate the potential energy: \[ U = 2 \times 9.8 \times 5 = 100 \, \text{J} \] Thus, the gravitational potential energy is \( 100 \, \text{J} \).