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  • The radius of the circle, the Period of revolution, the initial Position, and the sense of revolution are indicated in figure Y Projection of the radius vector of rotating particle p <p

The radius of the circle, the Period of revolution, the initial Position, and the sense of revolution are indicated in figure Y Projection of the radius vector of rotating particle p

Option: 1

Y=7cos\left ( \frac{\pi}{4}t \right )


Option: 2

Y=7cos\left ( \frac{\pi}{2}t \right )


Option: 3

Y=4cos\left ( \frac{\pi}{4}t \right )


Option: 4

Y=7cos\left ( \frac{\pi}{7}t \right )


Answers (1)

best_answer

T=8 \mathrm{sec} \quad A=7 \mathrm{~m}

Time Period 

T=\frac{2 \pi}{\omega}
\begin{aligned} & 8=\frac{2 \pi}{\omega} \quad \omega=\frac{2 \pi}{8} \\ & \omega=\frac{\pi}{4} \end{aligned}
When the time is noted from the extreme Position,
so y=A \cos \omega t
y=7 \cos \left(\frac{\pi}{4} t\right)

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Riya

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