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Grade: 11
        

a hollow sphere filled with water is used as the bob of a pendulum. if water slowly leaks out of the bob how will the time period vary? 

7 years ago

Answers : (3)

vikas askiitian expert
509 Points
							

T =2pi(L/g)1/2

time period is independent of mass of bob so it should not vary when the water leaks..

7 years ago
varsha rao
29 Points
							

This same question was asked in kvpy 2010 paper and their answer key says T increases first and then decreases 

7 years ago
Anil Pannikar AskiitiansExpert-IITB
85 Points
							

Dear Varsha,

 

Yes u are correct T increases first because centre of mass of hollow sphere ( with water ) is in the centre of the sphere but as the water leaks from it the centre of mass shifts downwards and hence T starts decreasing.

 

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Askiitians Expert

Anil Pannikar

IIT Bombay

 

7 years ago
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