Question

Please answer the question my friends


An artificial satellite is moving in a circular orbit of radius 4200 km. What is its speed if it takes 24 hours to revolve around the earth?​

Answer 1

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${\huge{\purple{\mathbb{\bold{ANSWER}}}}}$

${\large{\blue{\bold{\underline{Given:-}}}}}$

▪︎ Radius of orbit = 4200 km.

▪︎ Time taken to revolve = 24 hours.

${\large{\blue{\bold{\underline{To\:\:Find:-}}}}}$

▪︎ Speed of the satellite.

${\large{\blue{\bold{\underline{Formula\:Used:-}}}}}$

=》 Circumference of circle

= 2 × pie × r.

=》 Speed = Distance/Time.

${\large{\blue{\bold{\underline{Now,}}}}}$

▪︎ Distance travelled by satellite

= Circumference of orbit.

= 2 × pie × r.

= 2 × 22/7 × 4200km.

= 2 × 22/1 × 600km

= 44 × 600km

${\large{\red{\boxed{\bold{=\:26400\:Km.}}}}}$

▪︎ Therefore the satellite took 24 hours to cover the distance of 26400 Km.

${\large{\blue{\bold{\underline{So,}}}}}$

=》 Speed

= 26400 km/24 Hr.

${\large{\red{\boxed{\bold{=\:1,100\:Km/Hr.}}}}}$

Therefore the required speed of the artificial satellite is 1,100 kilometer per hour.

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