Figure shows the circular motion of a particle. The radius of the circle, the period, sense of re...

Figure shows the circular motion of a particle. The radius of the circle, the period, sense of revolution and the initial position are indicated on the figure. The simple harmonic motion of the x-projection of the radius vector of the rotating particleis
(a) x(t)=B sin(2 π/30 t)
(b) x(t)=B cos(π/15 t)
(c) x(t)=B sin(π/15 t+π/2)
(d) x(t)=B cos(π/15 t+π/2)

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