Question

6.4 K J of energy causes a displacement of 64m in a body in the direction of the force in 2.5 s. Calculate (1)the applied force and (2) power in horse power.
(1 horse power equal to 746 watt)

Answer 1

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Here's your answer...

Given...
E = 6.4 KJ
S = 64 m
t = 2.5 s

E = F×S
6400 J = F × 64 m
F = 100 N

P = E/t
= 6400/2.5
= 2560 W
= 2560/746 HP
= 3.43 HP (approx.)

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