What is the gravitational potential energy of an object with a mass of 10 kg at a height of 5 meters above the ground?

1 answer

The gravitational potential energy (U) of an object can be calculated using the formula:

\[ U = mgh \]

where:

  • \( m \) is the mass of the object (in kilograms),
  • \( g \) is the acceleration due to gravity (approximately \( 9.81 , \text{m/s}^2 \) on the surface of the Earth),
  • \( h \) is the height above the ground (in meters).

For the given problem:

  • \( m = 10 , \text{kg} \)
  • \( g = 9.81 , \text{m/s}^2 \)
  • \( h = 5 , \text{m} \)

Substituting these values into the formula:

\[ U = 10 , \text{kg} \times 9.81 , \text{m/s}^2 \times 5 , \text{m} \]

Calculating this:

\[ U = 10 \times 9.81 \times 5 = 490.5 , \text{J} \]

Thus, the gravitational potential energy of the object is \( 490.5 , \text{Joules} \).