# A Tanker

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.

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