A car is moving in a circular horizontal track of radius $10\, m$ with a constant speed of $10 \,m/sec$. A plumb bob is suspended from the roof of the car by a light rigid rod of length $1.00\, m$. The angle made by the rod with track is ........ $^o$

  • [IIT 1992]
  • A

    $0$

  • B

    ${30}$

  • C

    $45$

  • D

    ${60}$

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$Reason$ : Centrifugal force is a reaction of centripetal force

  • [AIIMS 2011]

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