Question

16) What is the potential energy, if a body of
mass 250 kg is at a height of 30 metre? | f 250​

Answer 1

Answer:

potential energy = mgh

gravity=9.81 Newtown

=250×9.8×30

=73,500

Answer 2

Given: A body of mass 250 kg is at a height of 30 metre.

To find: The potential energy.

Solution:

• Potential energy of a body is the energy by virtue by which it exists in a state of rest.
• It is given by the formula,

        $P = mgh$

• Here, P is the potential energy, m is the mass, g is the acceleration due to gravity and h is the height of the body.
• On replacing the terms with the values given in the question,

        $P = (250 kg) (10ms^{-2}) (30 m)$

            $= 75000 J$

Therefore, the potential energy is 75000 J.