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Can you identify a non conservative force from the following

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Important Questions on Laws of Motion

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Frictional force is_______________.
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The potential energy of a system increases if work is done
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Which of the following statement is not true?
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A particle of mass m is projected at an angle α to the horizontal with an initial velocity v0. The work done by gravity during the time it reaches its highest point is -
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A force F is related to the position of a particle by the relation F = (10x2) N. The work done by the force when the particle moves from x = 2 m to x = 4 m is
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Work done by static friction on an object 
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A particle moves from 1, 2, 3 m to 5, 4, 1 m under the action of two forces 4i^+j^-3k^ N and 3i^+j^-k^ N. Now, find the total work done by the forces.

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If a force F is applied on a body and it moves with a velocity v, the power will be