Gravitational Fields

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A level Physics Mindmap am Gravitational Fields, erstellt von Husein Adamjee am 27/05/2017.
Husein Adamjee
Mindmap von Husein Adamjee, aktualisiert more than 1 year ago
Husein Adamjee
Erstellt von Husein Adamjee vor mehr als 7 Jahre
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Zusammenfassung der Ressource

Gravitational Fields
  1. What is Gravity?
    1. Gravity is the force that causes 2 masses to attract to each other
      1. Because of gravity, dust particles attracted towards each other, eventually forming stars and galaxies.
      2. Newton's law of gravitation
        1. A particle with mass will generate a gravitational field around it. A particle that has a mass will feel a force when in this gravitational field
          1. Unlike electric fields, gravitational fields are always attractive
          2. The force experienced (F) by an object in a gravitational field is the product of its mass (m) and the gravitational field strength (g)
            1. We can use newtons 2nd law (f=ma) to create an equation where we can find the acceleration of a particle inside a gravitational field
            2. Newton then came up with an equation to calculate the gravitational force between 2 massive particles (f), separated a distance r, between their centres of gravity
            3. Gravitational Field Strength
              1. A Gravitational field is produced radially around a point mass. The further away from the mass, the greater the strength of the field. This leads to there being regions in space where there is 0 gravity
                1. We can use newton's law of gravitation to derive an equation for the gravitational field strength.
              2. Gravitational Potential
                1. Gravitational potential is the amount of work done to move an object to a certain point in a gravitational field.
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