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 particle P is
A. x(t) = B sin (2πt/30)
B. x(t) = B cos (πt/15)
C. x(t) = B sin (πt/15 + π/2)
D. x(t) = B cos (πt/15 + π/2)
Answer:A
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 particle P is
A. x(t) = B sin (2πt/30) B. x(t) = B cos (πt/15) C. x(t) = B sin (πt/15 + π/2) D. x(t) = B cos (πt/15 + π/2)