SHMHard
Question
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
Options
A.11%
B.21%
C.42%
D.10%
Solution
Time period of simple pendulum is given by.
T = 2π
New length l′ = l +
∴
⇒ T′ = T +
T
T ≠ 10% of T.
T = 2π
New length l′ = l +
∴
⇒ T′ = T +
TT ≠ 10% of T.
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