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Grade: 12th pass

                        

A girl swinging on a swing in sitting position suddenly stands on it. Then period of oscillation of the swing A. Increases B. Decreases C. Remain unchanged D. Becomes infinite

7 months ago

Answers : (3)

Saurabh Koranglekar
askIITians Faculty
10227 Points
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7 months ago
Vikas TU
13868 Points
							
When athe girl stands up the centre of mass gets higher which is also the point of oscillation. As a result the effective length will decrease. Now since the time period varies with the square root of the effective length, time period will decrease.
7 months ago
Arun
25384 Points
							

As we learnt in

Time period of oscillation of simple pendulum -

T=2\pi \sqrt{\frac{l}{g}}

- wherein

l = length of pendulum 

g = acceleration due to gravity.

 

 

 

The centre of gravity shifted upwards so the length from point of suspension will decrease.

Correct option is 2.

7 months ago
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