Question

A boy of mass 40 kg runs up a flight of 50 steps of a stair in 30 sec .If each step is 20 cm high calculate the power is used

Answer 1

➡️Here is your answer〰️〰️


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Mass=40 Kg

Height=50×20/100 m –» 10 metres

work done=mgh
=40×10×10
4000 Joules

$power = \frac{work \: done}{time \: taken} \\ = \frac{4000}{30} \\ = \frac{400}{3} watt$
Hope it will help you‼️‼️