Physics

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}

276\,\text{N}

368\,\text{N}

245\,\text{N}