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AaronAndyson
 one year ago
6.4kJ of energy causes a displacement of 64m in a body in the direction of force in 2.5s.Calculate
1.The force applied.
2.Power in HP.
Take 1 HP = 746W
AaronAndyson
 one year ago
6.4kJ of energy causes a displacement of 64m in a body in the direction of force in 2.5s.Calculate 1.The force applied. 2.Power in HP. Take 1 HP = 746W

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AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.2@Abhisar @TorilovesVampires

TorilovesVampires
 one year ago
Best ResponseYou've already chosen the best response.0W = K.E = 6.4 kJ = 6.4 x 103 J W = F.d. cos θ Now the displacement of the body is in the direction of applied force. θ = 0 W = F.d F = W/d = (6.4 x 103 J)/64 m F = 100 N Power P = W/t = (6.4 x 103 J)/(2.5) =16 x 103 W =1.6 x 104 W = (1.6 x 104) / 746 = 0.0021 x 104 H.P. Power P = 21 H.P.

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.2I'm confused. Shouldn't the F be 10.3?

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Work = Force x Displacement and this work done will be equal to energy supplied, Right?

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Let the applied force be F, then 6400 = F x 64. Now you can calculate the force.

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1\(\sf Power = \frac{Work/Energy}{Time}\) You know the work, you know the time. Just plug in the values and find power.

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.2Time is 2.5 s not 25s

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Right, then it's correct!

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Finally, convert the power into HP. 1 HP =746 Watts.

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.2Thanks @Abhisar and @TorilovesVampires both.

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1pleasure is all mine c:
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