Question

Two identical ring of equal mass 'm' and radius 'R' rigidly attached wears a bead of mass 'm'. Bead can freely slide without friction. It is hinged at point 'P' in such a way that it can freely rotates about horizontal axis passing through point 'P'. The ring and bead are released from rest from give position. Then, just after release

• A. The magnitude of angular acceleration of ring is $\frac{5g}{17R}$
• B. The magnitude of angular acceleration of rod is $\frac{2g}{9R}$
• C. The magnitude of acceleration of bead is $\frac{2g}{7}$
• D. The magnitude of acceleration of bead is $\frac{\sqrt{85}g}{9}$

Answer 1

Answer: (D)

The magnitude of acceleration of bead is $\frac{\sqrt{85}g}{9}$

Answer 2

The final answer is $\boxed{D}$.