The radius of circle, the period of revolution, initial position and sense of revolution…

Physics · JEE Main · NTA Exams — Oscillations and Waves

The radius of circle, the period of revolution, initial position and sense of revolution are indicated in the fig.

 y – projection of the radius vector of rotating particle P is:

1. y(t) = 4 sin\(\left(\frac{\pi t}{2}\right),\) where y in m
2. y(t) = 3 cos\(\left(\frac{3 \pi t}{2}\right),\)  where y in m
3. y(t) = 3 cos\(\left(\frac{\pi t}{2}\right),\)  where y in m
4. y(t) = – 3 cos 2πt, where y in m

Answer

(C) y(t) = 3 cos ( t 2 ), where y in m

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