Question

A boy of mass 50 kg runs up to Kaif of 45 steps in 9 second if the height of the stumps 15 cm find his power if g=10 per ms????​

Answer 1

Answer:

m = 50 kg

h = 45 x15  = 675 cm  = 6.75 m  

t = 9 s  

g = 10 m  

PE = mgh = 50 x 10 x 6.75  = 3375 J  

Power of the body  = PE / time  = 3375 / 9  = 375 W

 

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Answer 2

Answer:

m = 50 kg

h = 45 x15  = 675 cm  = 6.75 m  

t = 9 s  

g = 10 m  

PE = mgh = 50 x 10 x 6.75  = 3375 J  

Power of the body  = PE / time  = 3375 / 9  = 375 W

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