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A small ball is suspended by a string fr...

A small ball is suspended by a string from the ceiling of a car. As the car accelerates at a rate ‘a’ the string makes an angle '/theta' with the vertical in equilibrium. Then the tension in the string is :

A

`mg cos theta`

B

`ma sin theta`

C

`m sqrt(a^2 + g^2)`

D

`ma sqrt(a^2 + g^2)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-LAWS OF MOTION-EXERCISE - II
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  8. A block of mass 5kg is lying on a rough horizontal surface. The coeffi...

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  18. A block of mass 4 kg is kept over a rough horizontal surface. The coef...

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  19. A body of mass 5kg is under the action of 50N on the horizontal surfac...

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