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JEE Main2012PhysicsGravitationActual

Assuming the earth to be a sphere of uniform density, the acceleration due to gravity inside the earth at a distance of r from the centre is proportional to

Options

  1. Ar
  2. Br⁻¹
  3. Cr^2
  4. Dr⁻²

Correct answer

A. r

Step-by-step solution

Acceleration due to gravity at depth d from the surface of the earth or at a distance r from the centre ' O ' of the earth g^ = 4 3 G r Hence g^ r

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