# Change in speed of satellite

• rohanlol7
In summary, the conversation discussed the variables involved in a satellite's circular orbit around the sun and the change in speed required for it to either fall into the sun or escape the solar system. It was determined that escape velocity is a speed and not a change in speed, and if the satellite's speed is reduced, its orbit will decrease in size and it will eventually fall into the sun. The reason for the satellite maintaining its distance from the sun was not directly addressed.
rohanlol7
a satellite is in circular orbit around the sun. which requires a greater change in speed: the satellite to fall to the sun or to escape the solar system

f = gmm/r^2

## The Attempt at a Solution

Calculated the escape velocity as(2 GM/R)^0.5
how do i find the speed required so that it falls down to the sun ?

Hi Rohan,

Escape velocity is a speed, not a change in speed...
You didn't use the
rohanlol7 said:
is in circular orbit around the sun.
at all !

What would happen if the satellite speed would be reduced ?

BvU said:
Hi Rohan,

Escape velocity is a speed, not a change in speed...
You didn't use the
at all !

What would happen if the satellite speed would be reduced ?
if the speed decreases the size of the orbit decreases and it'll eventually fall into the sun ?

Why does the satellite maintain its distance from the Sun while orbiting?

## 1. How does the speed of a satellite change?

The speed of a satellite can change due to several factors, including changes in altitude, gravitational pulls from other celestial bodies, and propulsion from its own thrusters.

## 2. What is the effect of a change in speed on a satellite's orbit?

A change in speed can have a significant effect on a satellite's orbit. If the speed increases, the satellite's orbit will become wider and higher, while a decrease in speed will cause the orbit to become narrower and lower.

## 3. Can a satellite's speed change without external forces?

Yes, a satellite's speed can change without external forces through the use of its own thrusters. This is commonly done to adjust the satellite's orbit or to maintain its speed as it experiences drag from the Earth's atmosphere.

## 4. How does the speed of a satellite affect its communication capabilities?

The speed of a satellite does not directly affect its communication capabilities. However, a change in speed can alter the satellite's orbit, which can affect the strength and clarity of its signal. A higher orbit can also increase the time it takes for a signal to reach the satellite, causing a delay in communication.

## 5. How does a change in speed affect a satellite's lifespan?

A change in speed can affect a satellite's lifespan in different ways. If the speed increases significantly, the satellite may experience higher levels of atmospheric drag, causing it to lose altitude and eventually re-enter the Earth's atmosphere. Conversely, a decrease in speed can prolong a satellite's lifespan by reducing atmospheric drag. However, changes in speed can also put additional stress on a satellite's components, potentially shortening its overall lifespan.

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