Out of the following functions representing motion of a particle which represent S.H.M? I.y=sinωt−cosωt II.y=sin3ωt III.y=5cos(3π4−3ωt) IV.y=1+ω2t2+ωt
A
Only (IV) does not represent S.H.M.
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B
(I) and (III)
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C
(I) and (II)
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D
Only (I)
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Solution
The correct option is B(I) and (III) Simple harmonic motions are periodic motions whose displacements can be represented as the linear sum of sin and cos functions.