30 A metal sphere of radius r and specific heat S is rotated

Last updated: 6/9/2023

30 A metal sphere of radius r and specific heat S is rotated about an axis passing through its centre at a speed of f second It is suddenly stopped and 50 of rotations per its energy is used in increasing its temperature Then the rise in temperature of the sphere is f 1 m f s 2 f r 5S 10r S 8 a b C d 5 rf 14S