Q. A body of mass is taken from infinity to a point . When the body reaches that point, it has a speed of . The work done by the conservative force is . Which of the following is/are true (assuming non-conservative and pseudo-forces to be absent)?

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A

Work done by the applied force is +7 J.

B

The total energy possessed by the body at P is +7 J.

C

The potential energy possessed by the body at P is +5 J.

D

Work done by all forces together is equal to the change in kinetic energy.

Solution:

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