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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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