A body weighs at the Earth’s surface

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A body weighs

600\,\text{N}

at the Earth’s surface. What will be its approximate weight when lowered to a depth of

640\,\text{km}

below the surface? (Take Earth’s radius

R = 6400\,\text{km}

and neglect changes in density.) (a)

486\,\text{N}

(b)

594\,\text{N}

(c)

540\,\text{N}

(d)

570\,\text{N}