Physics

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}

594\,\text{N}

540\,\text{N}

570\,\text{N}