Question

A coolie of 40 kg weight carries 20 kg salt and climbs up 20 steps of 20
centimeters each in 2 minutes. Calculate the work done by him and his power.

Answer 1

Answer:

A coolie of 40kg weight carries 20kg salt and climbs up 20steps of 20 centimetre each in 2 minutes. calculate the work done by him and his power. where acceleration due to gravity is 10m/s square please help me with this

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Explanation:

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Answer 2

Answer:

Given

mass of coolie = 40 kg

Mass of salt = 20 kg

Total mass (m) = 40 + 20 = 60 kg

Displacement (h) = 20*20 = 400 CM = 4 m

Work done (w) = ?

Power (P) = ?

We know we have the formula

work done =force × displacement

or work done = m * g * h

work done = 60×10×4

work done = 2400 joules

Similarly

power = work/time

power = MGH/time

power=60×10×4/120

power=2400/120

power= 20watt

Explanation: I hope this answer might be helpful for you.

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