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Question

Two forces of 22 N and 10 N are applied on a block in opposite direction. Together they displace it by 6.5 metres. The net work done on the block is .

A
12 J
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B
90 J
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C
78 J
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Solution

The correct option is C 78 J

Two forces 22 N and 10 N are acting in opposite direction on the body.

The net force acting on the block =(22-10) N =12 N

Displacement of the body along the direction of the force is 6.5 m.

Net Work done
= Net force × total displacement
=12×6.5=78J


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