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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A large block of ice 5m thick has a vertical hole drilled through it and is floating in the middle of a lake. What is the minimum length of a rope required to scoop up a bucket full of water through the hole? Relative density of ice =0.9.

A large block of ice 5m thick has a vertical hole drilled through it and is floating in the middle of a lake. What is the minimum length of a rope required to scoop up a bucket full of water through the hole? Relative density of ice =0.9.

A cylinder of radius R = 1 m and height H = 3 m two- thirds filled with water is rotated about its vertical axis as shown in Fig. Determine the speed of rotation when a. the: water just starts spilling over the rim. b. the point at the centre of the base is just exposed.