Question Answers

Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > The steel balls A and B have a mass of 500 g each and are rotating about the vertical axis with an angular velocity of 4 rad/s at a distance of 15 CM from the axis. Collar C is now forced down until the balls are at a distance 5 CM from the axis. How Much work must be done move the collar down?

The steel balls A and B have a mass of 500 g each and are rotating about the vertical axis with an angular velocity of 4 rad/s at a distance of 15 CM from the axis. Collar C is now forced down until the balls are at a distance 5 CM from the axis. How Much work must be done move the collar down?

A uniform disc of mass m is fitted (pivoted smoothly) with a rod of mass m/2. If the bottom of the rod os pulled with a velocity v it moves without changing its and of orientation and the disc rolls without sliding. Find the kinetic energy of the system (rod + disc)