Question

An artificial satellite is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hour to resolve around the earth.

Answer 1

Explanation:

Distance covered by the satellite in 24 hours

s=2πr

=2×3.14×42250=265464.58 km

Therefore speed of satellite,

v=

time taken

distance travelled

=

24×60×60

265464.58

=3.07 km s

−1

Answer 2

★ Given :

radius of circular orbit = 42250 km

Time taken by artificial satellite = 24 hours

★ To find :

Speed of the artificial satellite..

★ Solution :

we know that,

circumference = 2πr

distance travelled =

$2 \times \frac{22}{7} \times 42250$

= 265571.429 ≈ 265571 km..

$Speed = \frac{Distance}{time}$

by putting values

$= \frac{265571}{24}$

$= 11065.4583 ≈ 11066 km/h$

$\purple\boxed{\therefore \:speed = 11066 \: km/h}$