Question #a5687

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Question #a5687

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Answer 1 · 2017-10-08T04:26:58

$W = 2.4 J$ $W=2.4J$

Explanation:

The work done is the amount of energy transferred by a force. It is dependent on the force and distance that the force travelled. Therefore, work done = force x distance.
$W = f \times s$ $W=fxxs$ , but the distance $(s)$ $(s)$ has to be in meters.
$40 c m = 0.4 m$ $40cm=0.4m$ because,

$1 c m = 0.01 m$ $1cm=0.01m$
$40 c m \times 0.01 m = 0.4 m$ $40cm xx 0.01m=0.4m$

$W = 6 N \times 0.4 m$ $W=6N xx 0.4m$

$= 2.4 J$ $=2.4J$

Answer 2 · 2017-10-08T04:44:04

See the answer below...

Explanation:

We know that work done is equal to the dot product of the force and the distance covered... which we can mathematically represent as
> $W = F . S$ $W=F.S$

Here $F = 6 N$ $F=6N$ and $S = \frac{40}{100} m = 0.4 m$ $S=40/100m=0.4m$

Hence the work done is $6 \times 0.4$ $6xx0.4$ joule= $2.4$ $2.4$ joule

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Question #a5687

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