A 75 kg man climbs a staircase with a height of 4 m. Wh - Practice (Bengali) - ObjectiveMcq

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A 75 kg man climbs a staircase with a height of 4 m. Wh - Practice (Bengali) - ObjectiveMcq

HomePracticeClass 9 SciencePhysicsA 75 kg man climbs a staircase with...

Physics Class 9 ScienceMedium

A 75 kg man climbs a staircase with a height of 4 m. What is the work done against gravity?

Correct Answer: C — 3000 J

Explanation:

Work done = mgh = 75 × 10 × 4 = 3000 J.

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