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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

Four identical spheres, each of mass and radius 10 cm each, are placed on a horizontal surface, touching one another, so that their centres are located at the corners of a square of side 20 cm. What is the distance of their centre of mass from the centre of any sphere?

Answer: (D)

Solution

The four equal masses are at the corners of a 20 cm square, so by symmetry their CM is at the

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Question ID VK-158671