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A pendulum of mass m hangs from a suppor...

A pendulum of mass m hangs from a support fixed to a trolley. The direction of the string (i.e., angle `theta` when the trolley rolls up a plane of inclination `alpha` with acceleration 'a' is 

A

Zero

B

`tan^(-1) alpha `

C

`tan^(-1)""(a+ g sin alpha)/(g cos alpha)`

D

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

Text Solution

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The correct Answer is:
C
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