View in English A solid sphere is held at rest on the fixed

Last updated: 6/10/2023

View in English A solid sphere is held at rest on the fixed hemispherical bowl made of insulating material such that centre of sphere lies on the horizontal diameter as shown in figure Total charge q 5 1 x 10 C and mass m 42 grams both are distributed uniformly in the sphere There exists uniform magnetic field B in space as shown in figure Consider contact surface to be sufficient rough Spherical bowl is made of non magnetic material Radius of bowl R 10 cm radius of sphere r 3 cm g 10 m s Now if sphere is released X At an angle 8 with horizontal velocity of COM of sphere will be v 10 7 g R r sin e At an angle 8 with horizontal velocity of COM of sphere will be v g R r sine 8 X Fixed bowl g B The limiting value of B appoximately so that on releasing sphere it do not leaves contact with bowl in course of motion will be 2T The limiting value of B appoximately so that on releasing sphere it do not leaves contact with bowl in course of motion will be 4T