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A bob of mass m is pulled along a circul...

A bob of mass m is pulled along a circular arc by means of a constant horizontal force P as shown. Work done in lifting the bob from A to B is

A

`(FR)/(2)`

B

`FR`

C

`(sqrt3)/(2)FR`

D

`mgR`

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-WORK, ENERGY AND POWER-Assignment (SECTION - A)
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  2. A rigid body moves a distance of 10m along a straight line under the a...

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  3. A bob of mass m is pulled along a circular arc by means of a constant ...

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  4. A particle is displaced from a position 2hati-hatj+hatk (m) to another...

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  5. A block of mass m tied to a string is lowered by a distance d, at a co...

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  6. Work done by frictional force

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  7. Under the action of a force, a 2 kg body moves such that its position ...

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  8. A bullet loses 1//20 of its velocity in passing through a plank. What...

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  9. A particle moves along the X-axis from x=0 to x=5 m under the influenc...

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  10. A particle of mass 2kg travels along a straight line with velocity v=a...

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  11. The position x of a particle moving along x - axis at time (t) is give...

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  12. A uniform chain of length L and mass M is lying on a smooth table and ...

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  13. Two bodies of masses m(1) and m(2) have same kinetic energy. The rat...

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  14. Two bodies of different masses m(1) and m(2) have equal momenta. Their...

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  15. KE of a body is increased by 44%. What is the percent increse in the m...

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  16. When momentum of a body increases by 200% its KE increases by

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  17. Two bodies with masses m1 kg and m2 kg have equal kinetic energies. If...

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  18. The K.E. acquired by a mass m in travelling a certain distance d, star...

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  19. A^(238) Unucleus decays by emitting an alpha particle of speed ums^(-1...

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  20. The total work done on a particle is equal to the change in its kineti...

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