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Question

The oscillators that can be described in terms of sine or cosine functions are called

A
simple harmonic
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B
natural
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C
sympathetic
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D
free
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Solution

The correct option is A simple harmonic
In simple harmonic motion, displacement of a particle is directly proportional to restoring force.
FxF=kxmd2xdt2=kx.
The solution of the above equation can be given by
x=c1cos(ωt)+c2sin(ωt)=Asin(ωtϕ), where
A=c21+c22, ω=km and ϕ=tan1(c2c1)
c1 and c2 are constants and values can be determined from the initial boundary conditions.
So simple harmonic motions can be described as sin or cosine functions.
Ans: A

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