What is Gravity?
can some one enplane What Gravity is ?
https://www.youtube.com/watch?v=jhpKUapI3cY
i cant comprehend this and i dont A level physics
https://www.youtube.com/watch?v=jhpKUapI3cY
i cant comprehend this and i dont A level physics
Original post by Failure In Life
can some one enplane What Gravity is ?
https://www.youtube.com/watch?v=jhpKUapI3cY
i cant comprehend this and i dont A level physicsS
https://www.youtube.com/watch?v=jhpKUapI3cY
i cant comprehend this and i dont A level physicsS
It is a force of attraction between two bodies that have mass. Why does this happen? Put simply: we don't know. All we have are theories (look up Einstein's work if you're really interested
).There are four fundamental forces: gravitational, electromagnetic, strong, and weak -- these are just names we've attributed to natural phenomenon we haven't yet understood.
What we do know, however, are their properties, such as the acceleration due to gravity, or the force produced when a current-carrying wire interacts with a magnetic field.
Hope this helps!
(edited 3 years ago)
The curvature of space-time by mass.
In the general theory of relativity we view gravity as occuring due to the curvature of spacetime, the curvature arising from the deformation of spacetime by masses within it.
In usual "flat" space the shortest path between two points is the straight line between them, but things are more complicated in a curved space. Consider for example two points on the surface of the sphere; the shortest curve between them is an arc of great circle, that is to say the intersection of the sphere with a plane through the centre of the sphere. In GR free (i.e. not subject to any forces other than gravity) particles move along geodesics - the distance minimising curves in the spacetime. In a curved spacetime these geodesics will be curved, giving the impression that the object's path is being bent away from a straight line. This is gravity.
In usual "flat" space the shortest path between two points is the straight line between them, but things are more complicated in a curved space. Consider for example two points on the surface of the sphere; the shortest curve between them is an arc of great circle, that is to say the intersection of the sphere with a plane through the centre of the sphere. In GR free (i.e. not subject to any forces other than gravity) particles move along geodesics - the distance minimising curves in the spacetime. In a curved spacetime these geodesics will be curved, giving the impression that the object's path is being bent away from a straight line. This is gravity.
Gravity can be thought of as a force, always an attractive force between any objects that have mass.
As time has gone on, the description of what gravity is has changed. At the moment it is thought of as a result of space and time (they are part of the same thing really, known as spacetime) curvature.
Our description of it is incomplete, we don’t know how gravity behaves on really small scales, so the answer to this question is at the moment at least, incomplete.
As time has gone on, the description of what gravity is has changed. At the moment it is thought of as a result of space and time (they are part of the same thing really, known as spacetime) curvature.
Our description of it is incomplete, we don’t know how gravity behaves on really small scales, so the answer to this question is at the moment at least, incomplete.
Original post by harrysbar
It's a downer
Quick Reply
Related discussions
- Help urgent maths
- Alevel help maths ugentttt
- re. Zero Gravity
- A level physics
- Mechanics help
- A level Physics question about volumen
- Whether a diploma is awarded to Buckingharmshire new university / business management
- music gcse edexcel
- Physics question- man in lift
- Buoyancy Hot Air Balloon Question
- Anybody else not get replies from their Zerogravity mentor?
- Mechanics help
- Potential energy Ex8-C Q:11
- as level mechanics suvat
- As level mechanics
- vertical motion- max height
- archimedes principle
- A1/A2 Mechanics - Pulleys MadasMaths Question
- Chemistry - organic
- SQA Higher Physics Assignment
