Three solid spheres each of mass m and radius R are released from the position as shown in figure. The speed of any one sphere at the time of collision will be:

Q: Three solid spheres each of mass m and radius R are released from the position as shown in figure. The speed of any one sphere at the time of collision will be:

Numerical

(a) $\sqrt{G m (\frac{1}{R} – \frac{2}{a})}$

(b) $\sqrt{G m (\frac{2}{R} – \frac{1}{a})}$

(c) $\sqrt{G m (\frac{1}{a} – \frac{3}{R})}$

(d) $\sqrt{G m (\frac{3}{a} – \frac{1}{R})}$

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Ans: (a)