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A toy train moving around a circular tra...

A toy train moving around a circular track has rotatory motion.

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Knowledge Check

  • Work done by a body moving on a circular track is zero at every instant because:

    A
    displacement is zero.
    B
    displacement is perpendicular to the centripetal force.
    C
    there is no force acting.
    D
    reason is not mentioned in the other options.

  • For traffic moving at 60 km/hour along a circular track of radius 0.1 km, the correct angle of banking is

    A
    `{(60)^(2)// 0.1 }` km
    B
    `tan^(-1) [((50//3)^(2))/(100 xx 9.8)]`
    C
    `tan^(-1) [(100 xx 9.8)/((50//3)^(2))]`
    D
    `tan^(-1) sqrt((60 xx 0.1 xx 9.8))`

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