Q 1 :    

The radius of circle, the period of revolution, initial position and sense of revolution are indicated in the figure. y-projection of the radius vector of rotating particle P is      [2019]

[IMAGE 118]
 

• $y\left(t\right)=3\cos \left(\frac{\pi t}{2}\right),$ where $y$ in m

   

• $y\left(t\right)=-3\cos 2\pi t,$ where $y$ in m

   

• $y\left(t\right)=4\sin \left(\frac{\pi t}{2}\right),$ where $y$ in m

   

• $y\left(t\right)=3\cos \left(\frac{3\pi t}{2}\right),$ where $y$ in m