A large block of ice 50 m thick has a vertical hole drilled through it and is floating in the middle of a lake. The minimum length of the rope in metre required to scoop up a bucket full of water through the hole is. [Relative density of ice = 0.9]

A large block of ice 50 m thick has a vertical hole drilled through it

1.	A large block of ice 50 m thick has a vertical hole drilled through it and is floating in the middle of a lake. The minimum length of the rope in metre required to scoop up a bucket full of water through the hole is. [Relative density of ice = 0.9]
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