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Power, Force and Velocity

A machine rai...

Question

A machine raises a load of $750 N$ through a height of $16 m$ in $5 s$ . Calculate work done by machine:

12000 k J

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12 k J

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1200 J

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120 k J

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Solution

The correct option is A $12 k J$
We know that $W o r k = F \times s$
Here, $F = 750 N$ and $s = 16 m$ .
$W = 750 \times 16 = 12000 J = 12 k J$

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