1.

A body weighing 350 Newton, runs up a flight of 30 steps, each 20 cm high in 5 seconds. Calculate the power spent. 

Answer»

The weight of the body (mg) = 350 Newton

Total distance covered by the body = 30 x 20 cm

= 600 cm 

= 6 metres

= 350 N x 6m / 5 seconds

= 420 watts 



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