A body of mass 1 kg is executing simple harmonic motion. Its displacement y(cm) at t seconds is given by y=6sin(100t+π/4) . Its maximum kinetic energy is
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a
6 J
b
18 J
c
24 J
d
36 J
answer is B.
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Detailed Solution
So a=6cm, ω=100rad/secKmax=12mω2a2=12×1×(100)2×(6×10−2)2=18 J