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Description
Flashcards by lauren2417, updated more than 1 year ago
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Created by lauren2417
over 9 years ago
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| Question | Answer |
| Centripetal acceleration | Acceleration of an object travelling in circle with a constant speed in a direction towards the centre of the circle |
| Field | A region in which a force operates |
| Gravitational field strength | Force acting per unit mass at a point |
| Newton's Law of Gravitation | The gravitational force of attraction between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them |
| Kepler's 3rd Law | The period of a planet squared is proportional to the mean radius of its orbit cubes |
| Geostationary orbit | An orbit of the Earth made by a satellite that has the same time period as the rotation of the Earth and is in the equatorial plane |
| Simple Harmonic Motion | Acceleration is directly proportional to the displacement. Acceleration is always directed towards the equilibrium position. |
| Damping | Deliberately reducing the amplitude of an oscillation |
| Resonance | Build-up of a large-amplitude oscillation when a driving frequency equals the natural frequency of an oscillating object. |
| Centripetal Force | The resultant force on an object, acting towards the centre of the circle causing it to move in a circular path |
| Free oscillations | When an object oscillates without a driving force acting to keep it oscillating. Objects undergoing free oscillations vibrate at natural frequency. |
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