Question

A Man Of Mass 50kg Ascends A Flight Of Stairs 5m High In 5 Seconds. It's Acceleration Due To Gravity Is 10metre Per Second. The Power Expended Is?

Answer 1

m g h/t

Answer 2

I just want to get the answer

Answer 3

[AI-generated answer — Explain Bot]

To calculate the power expended, we need to use the formula:

Power = Work / Time

First, let's calculate the work done by the man in ascending the flight of stairs. The work done is given by the formula:

Work = Force × Distance

The force acting on the man is equal to his weight, which is given by:

Force = Mass × Acceleration due to gravity

So, substituting the values given:

Force = 50 kg × 10 m/s² = 500 N

Now, we can calculate the work done:

Work = Force × Distance = 500 N × 5 m = 2500 J (Joules)

Finally, we can find the power expended using the formula:

Power = Work / Time

The time taken to ascend the stairs is given as 5 seconds:

Power = 2500 J / 5 s = 500 W (Watts)

Therefore, the power expended is 500 Watts.