The length of a simple pendulum executing simple harmonic motion is increased by 21% The percentage increase in the time period of the pendulum of increased length is
11%
21%
42%
10%.
As we learnt in
Time period of oscillation of simple pendulum -
- wherein
l = length of pendulum
g = acceleration due to gravity.
Let the lengths of pendulum be and
Correct option is 4.
Option 1)
11%
This is an incorrect option.
Option 2)
21%
This is an incorrect option.
Option 3)
42%
This is an incorrect option.
Option 4)
10%.
This is the correct option.
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