The weight of an object at the centre of the earth of radius R is (a) zero (b) infinite (c) R times the weight at the surface of the earth 1/R2 times the weight at surface of the earth

• Soln:

Answer is (a) zero

Explanation:

At the centre of the earth acceleration due to gravity is zero . Since weight is the product of mass and gravity. Weight of object at the centre of the earth will be zero.