Sound WavesHard
Question
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 length is :
Options
A.22 %
B.13 %
C.50 %
D.10 %
Solution
T = 2 
⇒ T2 = 4π2 
Taking log on both sides,
2log T = log 4π2 + log l - log g,
Differenting on both sides,
dT = 0 + 
dl - 0
⇒ T2 = 4π2 Taking log on both sides,
2log T = log 4π2 + log l - log g,
Differenting on both sides,
dT = 0 + dl - 0Create a free account to view solution
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