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The only force acting on a block is alon...

The only force acting on a block is along x-axis is given by `P=-((4)/(x^(2)+2))N`, When the block moves from x= -2 m to x = 4 m, the change in kinetic energy of block is-

A

Positive

B

Negative

C

Zero

D

May be positive or negative

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A
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ALLEN -TEST PAPER-Exercise (Physics)
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  2. The kinetic energy of a particle continuously icreses with time

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  3. The only force acting on a block is along x-axis is given by P=-((4)/(...

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  4. In the figure, a block slides along a track from one level to a higher...

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  5. A block of mass 2.0 kg is given an initial speed along the floor towar...

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  6. A particle moves on x-axis such that its KE varies as a relation KE=3t...

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  7. The potential energy (in joules ) function of a particle in a region o...

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  8. AB is a quarter of a smooth horizontal circular track of radius R,A pa...

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  9. The potential energy of a particle of mass 1 kg moving in X-Y plane is...

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  10. A block of mass m is pushed up against a spring, compressing it a dist...

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  11. A train of mass 100 metric tons is ascending uniformly on an incline o...

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  14. A monkey of mass 20 kg rides on a 40 kg trolley moving at a constant s...

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  15. A ball A moving with a velocity 5 m/s collides elastically with anothe...

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  16. The angular speed of a star spinning about its axis increases as the s...

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  17. A mass m=1 kg hangs from the wheel of radius R=1 m .When released fro...

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  18. In the following figure, a sphere of radius 3m rolls on a plank. The a...

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  19. Three parallel forces are acting on a rod at distances of 40 cm, 60 cm...

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