Advertisements
Advertisements
प्रश्न
Calculate the critical velocity of the satellite to be located at 35780 km above the surface of earth.
Advertisements
उत्तर
Given: Height of the satellite above the earth’s surface (h)
= 35780 km
= 35780 × 103 m
We know that:
Gravitational constant (G) = 6.67 × 10–11 N m2/kg2,
mass of earth (M) = 6 × 1024 kg,
radius of earth (R) = 6400 km
= 6400 × 103 m
To find: Tangential velocity of satellite (vc)
Formula: `"v"_"c" = sqrt("GM"/("R + h"))`
Calculation: From formula,
`"v"_"c" = sqrt(((6.67 xx 10^-11) xx (6 xx 10^24))/((6400 + 35780) xx 10^3))`
`= sqrt((40.02 xx 10^13)/(42180 xx 10^3))`
`= sqrt(40.02/42180 xx 10^10)`
`= sqrt (0.0009487909 xx 10^10)`
`= sqrt(9.487909 xx10^6)`
≈ `sqrt9.5 xx 10^3`
= 3.08 × 103 m/s
= 3.08 km/s
The critical velocity of the satellite is 3.08 km/s.
APPEARS IN
संबंधित प्रश्न
Why are geostationary satellites not useful for studies of polar regions?
Complete the following table.
If the height of a satellite completing one revolution around the earth in T seconds is h1 meter, then what would be the height of a satellite taking \[2\sqrt{2} T\] seconds for one revolution?
Considering first correlation, complete the second.
Hubble telescope : At 569 km above the earth’s surface
Orbit of Hubble telescope : .............................
Write the proper name of the orbits of satellites shown in the following figure with their height from the earth’s surface.
Name the first artificial satellite sent by Russia in space.
The function of a satellite launcher is based on Newton's second law of motion.
What is Medium Earth Orbit?
Observe the figure and write the answers.
- Name the outer orbit.
- Which satellites revolve in low earth orbits?
- Which various orbits are given in the figure?
- Give an example of a launch vehicle based on Newton’s third law.
Define orbital velocity.
Write a note on orbital velocity
Why are some satellites called geostationary?
What is microgravity?
The orbital velocity of the satellite depends on its ______.
Give scientific reasons.
The geostationary satellite is not useful in the study of polar regions.
The height of medium earth orbit above the surface of the earth is ______.
Complete the Following table.
| Sr. no. | Type of Satellite | The names of Indian Satellite and launcher |
| (1) | Navigational Satellite | Satellite: ______ |
| Launcher: ______ | ||
| (2) | Earth Observation Satellite | Satellite: ______ |
| Launcher: ______ |
The orbit of a satellite is exactly 35780 km above the earth's surface and its tangential velocity is 3.08 km/s.
How much time the satellite will take to complete one revolution around the earth?
(Radius of earth = 6400 km.)
