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Work done by friction in pure rolling is...

Work done by friction in pure rolling is always zero. Is this statement true or false?

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net work done by friction in pure rolling is always zero.
For example if A pure rolls over B, then work done by friction on both A and B are non-zero (one is positive and other is negative). But net work done by friction `=0`
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Knowledge Check

  • Work done by frictional force

    A
    Is always negative
    B
    Is always positive
    C
    Is zero
    D
    May be positive, negative or zero

  • Work done by friction in case of pure rolling

    A
    is always zero
    B
    is always positive
    C
    is always negative
    D
    may be positive,negative or zero

  • Work done by a frictional force is

    A
    negative
    B
    positive
    C
    zero
    D
    all of the above

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    A : The work done by friction on an object during pure rolling motion is zero. R : In pure rolling motion, there is relative motion at the point of contact.

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