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A simple pendulum is set up in a trolley...

A simple pendulum is set up in a trolley which moves to the right with an acceleration a on a horizontal plane. Then the thread of the pendulum in the mean position makes an angle `theta` with the vertical

A

`"tan"^(-1)(a)/(g)` in the forward direction

B

`"tan"^(-1) (a)/(g)` in the backward direction

C

`"tan"^(-1)(g)/(a)` in the backward direction

D

`"tan"^(-1)(g)/(a)` in the forward direction

Text Solution

Verified by Experts

The correct Answer is:
B

`tantheta=(ma)/(mg)=(a)/(g)`
`implies theta=tan^(-1)((a)/(g))`
in the backward direction.
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