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A child applies a force vecF parallel to...

A child applies a force `vecF` parallel to the x-axis to a block moving on a horizontal surface. As the child controls the speed of the block, the x-component of the force varies with the x-coordinate of the block as shown in figure. Then

The work done by the force F when the block moves from x=4 to x=6m is

A

2J

B

3J

C

4J

D

`-1J`

Text Solution

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The correct Answer is:
D
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