Question

Find the gravitational potential energy of 2 kg mass kept at a height of 2 m above the ground. Calculate its kinetic energy when it falls to ground. *PLEASE DONT SPAM OR GIVE WORNG ANSWERS*

Answer 1

Answer:

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Explanation:

What is the gravitational potential energy of 2.5 kg mass kept at a height of 15 metres above the ground? The force of gravity on mass 1 kg is 10 Newton?

ANS.:-The gravitational potential energy (in J) is the product of the mass (in kg), the acceleration due to gravity (in m/s²) and the height above the ground (in m).

We are told that the mass, m, is 2.5 kg and the height, h, is 15 m. But what about the acceleration due to gravity?

From Newton’s Second Law of Motion, we have Force = mass times acceleration. The question tells us that the gravitational force acting on a mass of 1 kg is 10 N, which means that the gravitational acceleration is 10 m/s².

We now have all we need to calculate the gravitational PE:

PE=mgh=2.5 kg×10 ms−2×15 m=375 J