# A Tanker

**Classical Mechanics**Level 4

A Cubical tanker completely filled with water ( combined weight = \(20000 \text{ N}\)) is moving with a constant velocity \(v = 20 \text{ m/sec}\). A Hole develops at the bottom in its horizontal surface through which water comes out at the rate of \(200\text{ gm}\) per second. If the velocity of tanker becomes \(x\) times its initial velocity after 30 seconds since the flow start. Then find \(x\).

Neglect friction.