A child swings sitting and standing insides wing as shown in figure, then period of oscillations have the relation
A) \[{{(T)}_{Sitting}}={{(T)}_{S\tan ding}}\]
B) \[{{(T)}_{Sitting}}>{{(T)}_{S\tan ding}}\]
C) \[{{(T)}_{Sitting}}<{{(T)}_{S\tan ding}}\]
D) \[2{{(T)}_{Sitting}}={{(T)}_{S\tan ding}}\]
Correct Answer: B
Solution :
When a sitting child on a swinging swing stands up, his centre of mass will go up and so L and hence T will decrease.
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