1.

The mass of a body is 100 kg calculate the amount of work done by the body in climbing 20 m high building is (g= 9.8 metre per square

Answer»

mass = 100 kgheight = 20 MG = 9.8 m/s²Formula WORK done = m g hCalculate the work Work = m g H          = 100 kg × 9.8 m/s² × 20 m          = 980 kg m/s² × 20 m          = 19600 kg m²/s²          = 19600 JANSWER :19600 J is the work done .



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