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A simple pendulum is suspended from the ...

A simple pendulum is suspended from the ceilling of a car taking a trun of radius 10 m at a seed of 36 km/h. Findte angle made by the string of the pendulum with the vertical if this angle does not dchange during the turn. Take `g=10 m/s^2`.

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The correct Answer is:
D
A pendulum is suspended from the ceiling of a car taking a turn. `
`f=10 m, `
v=36 km/hr`
`=10 m/sec`
` g=10 m/sec^2`

From the ure
`Tsintheta=(mv^2)/r`………i
`Tcostheta=mg` ……..ii
`rarr ((sintheta)/(costheta))=((mv^2)/(rmg)`
`rarr tantheta=(v^2/(rg))`
`rarr theta=tan^-1(v^2/rg)`
`tan^-1 [100/((10xx10))]`
`=tan^-1(1)`
` rarr theta =45^0`
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