Question

5.An artificial satellite is moving in a circular orbit of radius 5000km. What will be its speed if it takes 24 hours to revolve around the earth​

Answer 1

Answer:

3.63 km/hr

Explanation:

Answer 2

Given:

An artificial satellite is moving in a circular orbit of radius 5000 km

To find:

The speed of the artificial satellite if it takes 24 hours to revolve around the earth

Solution:

We know that the distance covered by the satellite around the earth in 1 revolution will be equal to the circumference of the orbit.

∴ Distance covered in 1 revolution,

= Circumference

= $2\pi r$

= $2\:\times\:\frac{22}{7} \:\times\:5000$

= $\frac{220000}{7}$

= $31428.57\:km$

The time taken by the artificial satellite to revolve around the earth = 24 hrs

We have the formula as,

$\boxed{\bold{Speed\:=\:\frac{Distance}{Time} }}$

∴ The speed of the artificial satellite will be,

= $\frac{31428.57\:km}{24\:hr}$

= $1309.52\:km/hr$

= $1309.52\:\times\:\frac{5}{18} \:m/s$

= $363.755\:m/s$

Thus, the speed of the artificial satellite will be 363.755 m/s, if it takes 24 hours to revolve around the earth.

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An artificial satellite is moving in a circular orbit of radius 42250 km. calculate its speed if it takes 24 hours to revolve around the earth​?

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