Question

Weight of a body of mass $m$ decreases by $1$ when it is raised to height h above the earth's surface. If the body is taken to a depth $h$ in a mine, then in its weight will

• A. decrease by $0.5$
• B. decrease by $2$
• C. increase by $0.5$
• D. increase by $1$

Answer 1

The correct option is A decrease by $0.5$

As,$\frac{g^{\prime }-g}{g}=-\frac{2h}{R_e}=-1$

$\frac{g^{\prime \prime }-g}{g}=-\frac{h}{R_e}=-\frac{1}{2}$

so, Weight in mne will decrease by $0.5$.