a boy weighing 50kg climbs up a vertical height of 100m.calculate the amount of work done by him . how much potential energy he gains.(given g=9.8 m/s^2 )
ANSWER IS GIVEN 4.9 ×10^4!!! HOW?
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यदा यदा हि धर्मस्य ग्लानिः भवति भारत,
अभि-उत्थानम् अधर्मस्य तदा आत्मानं सृजामि अहम् |
परित्राणाय साधूनां विनाशाय च दुस्-कृताम्,
धर्म-संस्थापन-अर्थाय सम्भवामि युगे युगे ||
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