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when the bob of a simple pendulum swings...

when the bob of a simple pendulum swings, the work done by bob in the string is :

A

`gt 0`

B

`lt 0`

C

zero

D

maximum

Text Solution

Verified by Experts

The correct Answer is:
C
Tension in the string is along the radius of circular path adopted by the body , while displacement of the bob is along the circumuforce of the path hence angle b,. Woon `vec F` and `vec s` in always `90^(@)` and to `W = 0`
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Knowledge Check

  • If the metal bob of a simple pendulum is replaced by a wooden bob, then its time period will

    A
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    B
    Decrease
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    `T(rho)/(rho - 1)`
    C
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    D
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  • The effictive length of a simple pendulum is the sum of the following three : length of string , radius of bob , and length of hook. In a simple pendulum experiment , the length of the string , as measured by a meter scale , is 92.0 cm . The radius of the bob combined with the length of the hook , as measured by a vernier callipers , is 2.15 cm . The effictive length of the pendulum is

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