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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A child is swinging a ball of mass M around on a light spring which has spring constant k. The ball describes a horizontal circle. The stretched spring has a length l and makes an angle theta with the vertical

A child is swinging a ball of mass M around on a light spring which has spring constant k. The ball describes a horizontal circle. The stretched spring has a length l and makes an angle theta with the vertical

A car is moving with uniform speed over a circular bridge of radius R which subtends an angle of 90 at its center. Find the minimum possible speed so that the car can cross the bridge