Question

If 5KJ of work is done in lifting 20kg of water to the top of a building , calculate the height of the building ( take g = 10 m /s​

Answer 1

Explanation:

Work done = - 5000 joules ( lifting the object )

Mass = 20 kg

Acceleration due to gravity = - 10 m/s^2 ( gravity acting downwards towards Earth )

Height = ???

Work done = Mass × Acceleration × Height

- 5000 = 20 × (-10) × Height

Height = 25 m.

Therefore, it is your answer.

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