A force 3 2 acts on a particle to displace it from the point A 2 3 to the point B 3 5 The work done ...........

Mathematics (NDA) Vector

A force $\vec{F}$ = $\hat{i}$ +3 $\hat{j}$ +2 $\hat{k}$ acts on a particle to displace it from the point A( $\hat{i}$ +2 $\hat{j}$ -3 $\hat{k}$ ) to the point B(3 $\hat{i}$ - $\hat{j}$ +5 $\hat{k}$ ). The work done by by the force will be?

5 units

7 units

9 units

10 units

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Explanation:

$\overrightarrow{AB}$ = 2 $\hat{c}$ -3 $\hat{j}$ +8 $\hat{k}$
work done = $\overrightarrow{F}.\overrightarrow{AB}$ =1x2+3(-3)+2(8)
=2-9+16=9 units

By: Munesh Kumari

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A force 3 2 acts on a particle to displace it from the point A 2 3 to the point B 3 5 The work done ...........

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Explanation:

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