Question

A potter caries 20 bricks each of weight 10 N to a hight of 100 m in 10 s. find power of the potter.​

Answer 1

Answer:

Explanation:

Mass of the 1 brick = 2.5 kg

mass of 10 bricks= 2.5 × 10 = 25 kg

power = work done × displacement / time

          =  mgh/t

          = 25 × 10 × 20 / 50

           =  100

there the power is 100 W

Answer 2

I perceive that his name is Bob.

If Bob is frictionless, and not only picks up, but also puts down that score of bricks (or is already carrying them at the start and end of the 100 m), and there is no windage effects, then the net work Bob does is zero. Hence the net power is zero.

Now. Note that for the 10 N and the 100 m to be SI quantities, there must be a space between the number and the unit.

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