The motion of a particle varies with time according to the relation y=asinωt+acosωt . Then
A
the motion is oscillatory but not SHM
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B
the motion is SHM with amplitude a
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C
the motion is SHM with amplitude a√2
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D
the motion is SHM with amplitude a2
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Solution
The correct option is D the motion is SHM with amplitude a√2 y=asinωt+acosωt =a√2sin(ωt+R4) Clearly amplitude is a√2 and motion is SHM. because a=d2ydt2=−a√2ω2sin(ωt+R4) So, a is proportion to ω2 ,which is the condition of SHM.