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
View Solution FreeMore Sound Waves Questions
A string of length 0.4 m and mass 10-2 is tightly clamped at its ends. The tension in the string is 1.6 N. Identical wav...The waves produced by a motorboat sailing in water are : -...A sound waves is travelling towards right and its S-t graph is as shown for x = 0.What will be density vs x graph at t =...A tube, closed at one end and containing air, produces, when excited, the fundamental note of frequency 512 Hz. If the t...In brass the velocity of longitudinal wave is 100 times the velocity of the transverse wave. If Y = 1011 N/m2 then stres...