Question

What is the gain in gravitational potential energy of a body of weight 2000N as it rises from a height of 20m to a height of 25 m above the Earth's surface

Answer 1

Answer:

Explanation:

GPE =weight * height

       = 2000*(25-20)

      =  10000 J

Answer 2

Gain of Gravitation Potential energy  = 10,000 J

What is Gravitation Potential Energy ?

It is the energy acquired by an object due to a change in its position when it is present in a gravitational  field .

To calculate gravitational potential energy at height h , formula used is                                                                  =                     m g h where m = mass of the body

                                            g = acceleration due to gravity

                                            h = height from the ground

Gain of Gravitation Potential energy  = mg(h2 - h1 )      h2 = final height

                                                                             h1 = initial height

                                                = 2000  (25 -20)    (since , mg =weight)

Gain of Gravitation Potential energy  = 10,000 J

Learn more about Gravitation Potential energy  :

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