Question

A satellite revolves around earth at a distance of 18000km. Evaluate distance and displacement after one complete revolution?

Answer 1

radius of earth =6400KM
Distance from centre of earth =6400+18000=24400Km
distance =2πR
$2 \times \frac{22}{7} \times 24400 \\ = 153371.429$
displacement =2R
=24400×2
48800

Answer 2

Answer:

The distance and displacement after one complete revolution are 153232 km and zero.

Explanation:

Given that,

Distance d= 18000 km

We know that,

Radius of earth r= 6400 km

Now, Distance from the center of earth is

$R= d+r$

$R=18000+6400$

$R=24400\ Km$

Distance :

The distance after one complete revolution is

$D=2\pi R$

$D=2\times3.14\times24400$

$D=153232\ km$

Displacement :

The displacement will be zero because a satellite reached at initial point after one complete revolution.

Hence, The distance and displacement after one complete revolution are 153232 km and zero.