Question

A man weight W on the surface of the earth. What is his weight at a height equal to R ?

• A. W
• B.
• C. $\frac { \mathrm { W } } { 4 }$
• D.

Answer 1

Answer: (C)

$\frac { \mathrm { W } } { 4 }$

Answer 2

$\frac { \mathrm { mg } _ { \mathrm { h } } } { \mathrm { mg } }$

= $\frac { \mathrm { g } _ { \mathrm { h } } } { \mathrm { g } }$

= $\frac { \mathrm { R } ^ { 2 } } { ( \mathrm { R } + \mathrm { R } ) ^ { 2 } }$

W_h =