Answer:v=3.28 m/s
Explanation:
Given
mass of rock [tex]m=500 gm[/tex]
diameter of circle [tex]d=2.2 m[/tex]
radius [tex]r=\frac{2.2}{2}=1.1 m[/tex]
At highest Point
[tex]mg+N=\frac{mv^2}{r}[/tex]
At highest Point N=0 because mass is just balanced by centripetal Force
thus [tex]mg=\frac{mv^2}{r}[/tex]
[tex]v=\sqrt{gr}[/tex]
[tex]v=\sqrt{9.8\times 1.1}[/tex]
[tex]v=\sqrt{10.78}[/tex]
[tex]v=3.28 m/s[/tex]
