Two particles of same mass are performing simple harmonic oscillation along the y−axis whose displacement time graphs are shown. If E1 and E2 are their energies of oscillation, then
A
E1=2E2
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B
E1=4E2
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C
E1=E2
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D
E2=4E1
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Solution
The correct option is CE1=E2 E=12mω2A2=12m(2πv)2A2 =12m(4π2v2)A2=(2mπ2v2A2)
For 1, Amplitude =2A, frequency =v ∴E1=2mπ2v2(2A)2=8mπ2v2A2
For 2, Amplitude =A, frequency =2v ∴E2=2mπ2(2v)2A2=8mπ2v2A2
i.e., E1=E2