Two balls of masses 5 kg and 10 kg are at the positions shown in figure. The track on which the balls move is frictionless. Initially, the 10 kg ball is kept at rest and the 5 kg ball is dropped with speed v from height 5 m. Assuming the collision between the balls is perfectly elastic, find the value of ′v′ such that the 10 kg ball reaches point ′C′.

Two balls of masses 5 kg and 10 kg are at the positions shown in figur

1.	Two balls of masses 5 kg and 10 kg are at the positions shown in figure. The track on which the balls move is frictionless. Initially, the 10 kg ball is kept at rest and the 5 kg ball is dropped with speed v from height 5 m. Assuming the collision between the balls is perfectly elastic, find the value of ′v′ such that the 10 kg ball reaches point ′C′.
Answer» Two balls of masses $5 kg$ and $10 kg$ are at the positions shown in figure. The track on which the balls move is frictionless. Initially, the $10 kg$ ball is kept at rest and the $5 kg$ ball is dropped with speed $v$ from height $5 m$ . Assuming the collision between the balls is perfectly elastic, find the value of $^{'} v^{'}$ such that the $10 kg$ ball reaches point $^{'} C^{'}$ .

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