High School

What is the gravitational potential energy of an object with a mass of 5.0 kg held at a height of 4 m above the ground?

A. 20 J
B. −196 J
C. 196 J
D. 196 Ji

Answer :

Final answer:

The gravitational potential energy of a 5.0 kg object held 4 m above the ground on Earth can be calculated using the formula PEg = mgh. Substituting the given values, we get PEg = 196 J.

Explanation:

The gravitational potential energy of an object can be calculated using the equation PEg = mgh, where 'PEg' stands for the gravitational potential energy, 'm' stands for the mass, 'g' is the gravitational acceleration, and 'h' is the height above the reference point. In this case, the mass 'm' is given as 5.0 kg, 'g' is approximately 9.8 m/s² on Earth, and the height 'h' is 4 m.

So, substituting the values into the formula, we get PEg = (5.0 kg) * (9.8 m/s²) * (4 m) = 196 J. Therefore, the correct option is C. 196 J.

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