Sound WavesHard
Question
A particle executes SHM of amplitude 25 cm and time period 3 s. What is the minimumtime required for the particle to move between two points 12.5 cm on either side of the mean position?
Options
A.0.5 s
B.1.0 s
C.1.5 s
D.2.0 s
Solution
y = r sinωt
12.5 = 25 sin
×t 
t =
sec = 0.25 sec
t′ = 2t
= 2 × 0.25 = 0.5sec
for either side
12.5 = 25 sin
×t t =
sec = 0.25 sect′ = 2t
= 2 × 0.25 = 0.5sec
for either side
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