Question

the weight of a particle at the centre of the earth is ..... .1) infinite 2)zero 3) same as that at other place 4) greater than at the poles​

Answer 1

Answer: 2. Zero

Explanation: zero newtons

Hope this will help u❤❤

Answer 2

option (2) The weight of a particle at the centre of the earth is zero.

we know, acceleration due to gravity varies with height from the surface of earth. it is represented as g = g0/(1 + h/r)²

we go down the earth, acceleration due to gravity becomes, g = g(1 - h/r)

when particle is located at the centre of the earth , then, depth of particle from the surface of the earth, h = r.

now, g = g0(1 - r/r) = 0

we also know, weight of particle = mass of particle × acceleration due to gravity

= mg = m × 0 = 0

hence, weight of particle at the centre of the eart is zero.