What is the center of mass in physics?
What is the center of mass in physics?
The center of mass is a position defined relative to an object or system of objects. It is the average position of all the parts of the system, weighted according to their masses. For simple rigid objects with uniform density, the center of mass is located at the centroid.
Should there necessarily be any mass at Centre of mass of system?
no, It’s not necessary that a mass should be present at the centre of mass of any system. hence, centre of mass is located at (0,0) . here it is clear that each tiny particle doesn’t present in origin but centre of mass of whole system of particles present in origin.
What is the weight of a body in a geostationary satellite?
The weight of a body is zero in a geostationary satellite.
Why is a body weightless at the Centre of the earth?
Reason: As the distance form centre of earth decreases, acceleration due to gravity increases. As the distance from centre of earth decreases, acceleration due to gravity decreases and at the centre of earth it becomes zero.
Where does a body weigh more?
The weight of a body depends on the force with which it is attracted towards the centre of the Earth. But this force is greater at the pole on account of less distance from the centre of the Earth. Due to this, the body weighs more at the poles than at the equator.
Where does a body weigh more at sea level or on the mountain?
Answer. The object / body will weigh more at sea because the value of g / gravity is less due to it decreases with an increase in height. So, there is a less value of g at mountain level and thus it will weigh more at sea level than on mountain level .
Where does a body have more weight at the pole or at the equator of the earth?
As the distance of the pole is less than the distance of the equator from the center of the earth, the force of attraction is higher on the body at poles than at the equator. Hence the weight of a body is greater at pole than at the equator.
What are the values of G and G at the Centre of the earth?
In the first equation above, g is referred to as the acceleration of gravity. Its value is 9.8 m/s2 on Earth….The Value of g Depends on Location.
| Location | Distance from Earth’s center (m) | Value of g (m/s2) |
|---|---|---|
| Earth’s surface | 6.38 x 106 m | 9.8 |
| 1000 km above surface | 7.38 x 106 m | 7.33 |
What is value of g at Moon?
approximately 1.625 m/s2