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Questions  

Two S.H.Ms. s1 = a sin ωt and s2 = b sin ωt are superimposed on a particle. The s1 and s2 are along the directions which make angle 37° with each other.

a
the particle will perform S.H.M.
b
the particle will not perform S.H.M.
c
the particle will perform periodic motion but not S.H.M.
d
the motion will not be oscillatory.

detailed solution

Correct option is A

Resultant displacement will be the vector sum of two displacements:S = S12+S22+2S1S2cos 37°    = a2sin2ωt+b2sin2ωt+2ab sin2ωt×45S = a2+b2+8ab5sin ωtWhich shows that the particle will perform SHM.

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