A child swinging on a swing in sitting position, stands up, then the time period of the swing will
increase
decrease
reamains same
increases if the child is long and decreases if the child is short.
As we learnt in
Time period of oscillation of simple pendulum -
- 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.
Option 1)
increase
This is an incorrect option.
Option 2)
decrease
This is the correct option.
Option 3)
reamains same
This is an incorrect option.
Option 4)
increases if the child is long and decreases if the child is short.
This is an incorrect option.
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