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Question

Match the column I with column II
Column IColumn IIA. When nonconservative forces are actingP. Work done by force may be negative.B. In the case of a pendulum, work done by tensionQ. Net Workdone is zeroC. When there is frictionR. The only force acting is gravityD. In Projectile motionS. Work done by force in a roundtrip is not equal to zero.


A
A-Q,R B-Q,R C-Q,R D-P,R
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B
A-P,S B-Q C-P,S D-R
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C
A-Q B-Q,R C-S D-Q
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D
A-Q B-Q C-Q,R D-P
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Solution

The correct option is B A-P,S B-Q C-P,S D-R

A. When non – conservative forces are acting work done in a round trip is not equal to zero.

B. In case of a pendulum, the sum of kinetic energy and potential energy is constant.

C. When there is friction, work done is negative. In projectile motion, the only force acting is gravity.

D. In uniform circular motion, there is no work done by a body.


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