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The length of a seconds hand in watch is...

The length of a seconds hand in watch is `1 cm.` The change in velocity of its tip in `15 s` is

A

zero

B

`(pi)/(30sqrt(2)cm//sec`

C

`(pi)/(30)cm//sec`

D

(pi(sqrt(2))/(30)cm//sec`

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Knowledge Check

  • The length of second's hand in watch is 1 cm . The change in Velocity of its tip in 15 seconds is

    A
    Zero
    B
    `(pi)/(30sqrt(2))cm//sec`
    C
    `(pi)/(30)cm//sec`
    D
    `(pisqrt(2))/(30)cm//sec`

  • The length of second's hand in a watch is 1 cm. The change in velocity of its tip in a period of 12 s is

    A
    Zero
    B
    `((pi)/(15sqrt2)) cms^(-1)`
    C
    `((pi)/(15)) cms^(-1)`
    D
    `((pi sqrt2))/(15)) cms^(-1)`

  • The angular speed of second hand in a watch is

    A
    `(pi)/(60) rad//s`
    B
    `(pi)/(30) rad//s`
    C
    `(pi)/(120) rad//s `
    D
    `(pi)/(2) rad//s`

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