Gravitational Fields 0.0 / 5 ? PhysicsGravitational fieldsA2/A-levelOCR Created by: gelatinousCreated on: 20-02-17 22:43 What is gravitational field strength? g=F/m. 1 of 11 How does gravitational field strength change with distance from mass? Decreases. 2 of 11 How is a uniform gravitational field represented? By parallel and equidistant field lines. 3 of 11 What is Newton's Law of Gravitation? F is directly proportional to Mm and F is inversely proportional to r^2. 4 of 11 What is the equation for Newton's Law of Gravitation? F=-GMm/r^2. 5 of 11 What is the gravitational field strength in a radial field? g=-GM/r^2 6 of 11 What is Kepler's first law? The orbit of a planet is an ellipse with the sun at one of the two foci. 7 of 11 What is Kepler's second law? A line segment joining a planet and the sun sweeps out equal areas during equal intervals of time. 8 of 11 What is Kepler's third law? T^2 is directly proportional to r^3. 9 of 11 What is speed for a satellite? v= (GM/r)^1/2 10 of 11 What makes a geostationary satellite? Orbits above the Earth's equator, rotates in the same direction of the Earth, has an orbital period of 24 hours. 11 of 11
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