Question

A boy weighing 40 kg carries a box weighing 20 kg to the top of a building 15 m high in 25 seconds . calculate the power (g=10m/sec​

Answer 1

see the attachment of the questions

Answer 2

Solution :

Given Data :

Total mass = 60

{Mass of Box = 40

Mass of Boy = 20}

Time = 25 Seconds

g = 10m/s

We need to find the power

p = (f × s) / t

But before this we need to find the force.

f = m × g

f = 60 × 10

f = 600

Now, apply the value of force into equation of power

p = (f × s) / t

p = (600 × 15)/ 25

p = 9000/ 25

p = 360 w

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