Simple pendulum is executing simple harmonic motion with time period T. If the length of the pendulum is increased by 21%, then the increase in the time period of the pendulum of the increased length is:
Text Solution
Verified by ExpertsThe correct answer is:
D
As length of a pendulum increases, its time period increases.
The time period 
, of a simple pendulum of length 
, and gravity 
is given by
Therefore, increase in time period is
Alternative: Time period of simple pendulum of length 
and gravity 
is given by
As 
increases, time period of pendulum will also increase.
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