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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 9 - Rotational Dynamics > A string is wrapped around a cylinder of mass M and radius R. The string is pulled vertically upwards to prevent the centre of mass from falling as the cylinder unwinds the string. Find the tension in the string.

A string is wrapped around a cylinder of mass M and radius R. The string is pulled vertically upwards to prevent the centre of mass from falling as the cylinder unwinds the string. Find the tension in the string.

then the initial angular acceleration of the board is: (Neglect weight of board) thereby destroying balance Three children are sitting on a see-saw in such a way that it is balanced. A 20kg and a 30kg boy are on opposite sides at a distance of 2m from the pivot. If the third boy jumps off