A object weighs on Earth’s surface

PHYSICS · Single correct · AP · Physics C: Mechanics · Force and Translational Dynamics · Force and Translational Dynamics

Problem

50\,\text{kg}

object weighs

490\,\text{N}

on Earth’s surface. What will be its weight when it is lowered to a depth of

1600\,\text{km}

inside a mine shaft? (Take Earth’s radius

R_{\mathrm E}=6400\,\text{km}

.) (a)

412\,\text{N}

(b)

276\,\text{N}

(c)

368\,\text{N}

(d)

245\,\text{N}