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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A ring of radius R = 4 m is made of a highly dense material. Mass of the ring is m1 = 5.4 × 10^9 kg distributed uniformly over its circumference. A highly dense particle of mass m2 = 6 × 10^8 kg is placed on the axis of the ring at a distance x0 = 3 m from the centre. Neglecting all other forces

A ring of radius R = 4 m is made of a highly dense material. Mass of the ring is m1 = 5.4 × 10^9 kg distributed uniformly over its circumference. A highly dense particle of mass m2 = 6 × 10^8 kg is placed on the axis of the ring at a distance x0 = 3 m from the centre. Neglecting all other forces

A particle of mass m is subjected to an attractive central force of magnitude k/r 2 at a distance a from the centre of force if the distance of other extreme position is b. Find a/b its speed is (k/2ma) ​ k being a constant. If at the instant when the particle is at an extreme position in its closed orbit