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Standard XII

Physics

Partially Inelastic Collision

The period of...

Question

The period of a simple pendulum, whose bob is a hollow metallic sphere The period is $T_{1}$ when the bob is filled with sand, $T_{2}$ when it is filled with mercury and To $T_{3}$ when it is half filled with mercury Which of the following is true ?

T = T_{1} = T_{2} > T_{3}

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T_{1} = T_{1} = T_{3} > T

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T > T_{3} > T_{1} = T_{2}

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T = T_{1} = T_{2} < T_{3}

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Solution

The correct option is B $T = T_{1} = T_{2} < T_{3}$
Time period of pendulum doesn’t depends upon mass but it depends upon length (distance between point of suspension and centre of mass). In first three cases length are same so $T = T_{1} = T_{2}$ but in last case centre of mass lowers which in turn increases the length.So in this case time period will be more than the other cases.

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The period of a simple pendulum, whose bob is a hollow metallic sphere The period is T1 when the bob is filled with sand, T2 when it is filled with mercury and To T3 when it is half filled with mercury Which of the following is true ?

The period of a simple pendulum, whose bob is a hollow metallic sphere The period is $T_{1}$ when the bob is filled with sand, $T_{2}$ when it is filled with mercury and To $T_{3}$ when it is half filled with mercury Which of the following is true ?