Q.
The figure shows the variation of force acting on a particle of mass 400g executing simple harmonic motion. The frequency of oscillation of the particle is
2979
206
NTA AbhyasNTA Abhyas 2020Oscillations
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Solution:
The slope of the curve is xF=−50.5=−0.1cmN=−10N/m
But F=−mω2x or F/x=−mω2
so, −mω2=−10 or ω2=m10 ∴ω2=4×10−110⇒ω=210=5 ∴f=2πω=2π5s−1