A man weighing 500N carried a load of 100N up a flight of stairs 4 meters high in 5 sec. What is the power? And why we have to multiply 500+100N ×4metres
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Explanation:
WORK DONE=FORCE ×DISPLACEMENT
here force is of gravity which is 500n+100n =600n
and displacement is 4 meters
W.D=600× 4
= 2400 J
WE HAVE MULTIPLIED IT BY 4 AS DISPLACEMENT OF FORCE VECTOR IS 4 METRE
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