UNIVERSE
SATELLITESICY BODIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A satellite cannot move in a stable orbit in a plane passing through the earth’s centre
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Geostationary satellites are launched in the equatorial plane
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We can use just one geostationary satellite for global communication around the globe
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The speed of a satellite increases with an increase in the radius of its orbit
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Detailed explanation-1: -Explanation: Orbital speed, v GM r Orbital speed, v 0 = GM r; so speed of satellite decreases with the increase in the radius of its orbit.
Detailed explanation-2: -If a satellite is going very fast, it can go forward so quickly that the pull of gravity can’t keep it in an orbit. If it is going slowly, it will not go forward enough to counter the pull of gravity and crash into the thing it is orbiting around.
Detailed explanation-3: -It pretends to be stationary with respect to the Earth but if we talk about the Angular Speeds of both the Earth and the Geostationary satellite, they are different. Hence, the correct option is B. Hope that this answer helps you.
Detailed explanation-4: -A satellite in an orbit is a freely falling body. It does not require any energy for its motion in the orbit and its speed is constant.
Detailed explanation-5: -They complete an orbit in about 90 minutes because they are close to the Earth and gravity causes them to move very quickly at around 17, 000 miles per hour. Many satellites need to be used for communication relay because the area they cover on Earth’s surface is small and they are moving so quickly.