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Byju's Answer
Standard IX
Physics
Simple Pendulum
A girl swings...
Question
A girl swings on a cradle in sitting position. If she stands, the time period of cradle :
A
decreases
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B
increases
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C
remains constant
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D
first ioncreases then it remains constant
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Solution
The correct option is
A
decreases
If she stands the center of mass moves up.
Thus the effective length is reduced.
T
=
2
π
√
l
g
Thus time period decreases.
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