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A plumb line is hanging from the roof of...

A plumb line is hanging from the roof of a car. When the car moves with an acceleration a, the angle that the plumb line makes with the vertical is

A

`tan^(-1)"" (a)/(g)`

B

`tan^(-1) ""(g)/(a)`

C

`cos^(-1)"" (a)/(g)`

D

`sin^(-1)""(g)/(a)`

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CHHAYA PUBLICATION-NEWTON'S LAWS OF MOTION-EXERCISE (MULTIPLE CHOICE QUESTIONS)
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  2. Masses of blocks A and B are 2 kg and 3 kg respectively. The blocks ar...

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  3. A person of mass M is at a height h from a floor in a place free from ...

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  4. A block is released from the top of an inclined plane of inclination t...

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  5. A plumb line is hanging from the roof of a car. When the car moves wit...

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  6. Consider an elevator moving downwards with an acceleration a, the forc...

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  7. A monkey is descending from the branch of a tree with a constant accel...

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  8. A car moving with a speed of 50 km/hr can stopped by brakes, over a di...

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  9. The x and y coordiates of a particle at any time t are given by x = 7t...

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  10. A ball of mass 0.5 kg is moving with a velocity v of 2 mcdot s^(-1) . ...

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  11. A force F(1) of 500 N is required to push a car of mass 1000 kg showly...

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  12. A cricket ball of mass 0.5 kg, moving at 30 mcdot s^(-1), hits a bat p...

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  13. A rocket consumes fuel at the rate of 100 kgcdot s^(-1). Gas ejects o...

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  14. Two bodies of masses 5 kg and 3 kg respectively are connected to two e...

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  15. A man of weight w is in a lift which is moving up with an acceleration...

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  16. A thief steals a treasure box of weight w. He then jumps off a wall of...

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  17. A free particle of mass m was in motion along the x-axis on a horizont...

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  18. A truck, carrying sand, moves with uniform velocity u on a smooth hori...

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  19. Steel pellets, each with a mass of 0.60 g, fall vertically onto a hori...

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