Question

The value of acceleration due to gravity (g) on a point
10,000 kilometers above sea level is about
1.49 meters/second2. How much will an object, which weighs
98 newtons on the surface of Earth, weigh on this point? The value of acceleration due to gravity on Earth is 9.8 meters/second2.

Answer 1

mass of the object can be calculated as
\[W = mg\]
\[m = \frac{ W }{ g }= \frac{ 98 N }{ 9.8 m/s^{2}} = 10 kg\]
So weight at a height 10,000 km will be
\[W' =mg' = 10 kg \times1.49m/s^{2}= 14.9 N\]