Question

a man weighing 500N carried a load of 100N up a flight of stairs 4m high in 5second . what is the power?/

Answer 1

Answer:

480 watt

Explanation:

as power =w/t

so, w=fs

w=600*4/5

=480 watt

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Answer 2

Given - Weight, height and time

Find - Power

Solution - Work done will be calculated by the formula - mass*acceleration due to gravity*height. Further, power = work done/time.

Total weight = 500 + 100

Performing addition

Total weight = 600 N

Keep the values in formula -

Work done = 600*4

Performing multiplication

Work done = 2400 Joules

Power = 2400/5

Performing division

Power = 480 Watt

Hence, the power is 480 Watt.