A miner of mass descends to a depth of below Earth’s surface

PHYSICS · Subjective · CBSE · Physics · Gravitation · Gravitation

Problem

A miner of mass

70\,\text{kg}

descends to a depth of

1\,\text{km}

below Earth’s surface. Given

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

, determine the percentage change in his weight compared to that on the surface.