Edexcel A Level Physics:復習筆記12.7 Orbital Motion
Orbital Motion Newton's Law of Gravitation & Orbits Since most planets and satellites have a near circular orbit, the gravitational force?FG?between the sun or another planet provides the?centr...
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Edexcel A Level Physics:復習筆記12.6 Comparing Electric & Gravitational Fields
Comparing Electric & Gravitational Fields The similarities and differences between gravitational and electrostatic forces are listed in the table below: Table Comparing G and E Fields Similarit...
Edexcel A Level Physics:復習筆記12.5 Gravitational Potential for a Radial Field
Gravitational Potential for a Radial Field Near the Earth's Surface The gravitational potential energy (G.P.E) is the energy an object has when lifted off the ground given by the familiar equation:...
Edexcel A Level Physics:復習筆記12.4 Gravitational Field due to a Point Mass
Gravitational Field due to a Point Mass The gravitational field strength at a point describes how much gravitational force is experienced by a test mass at that point The strength of a gravitationa...
Edexcel A Level Physics:復習筆記12.3 Newton’s Law of Universal Gravitation
Newton's Law of Universal Gravitation The gravitational force between two masses, e.g., between the Earth and the Sun, is defined by Newton’s Law of Universal Gravitation Newton’s Law of Universal ...
Edexcel A Level Physics:復習筆記12.2 Gravitational Field Strength
Gravitational Field Strength There is a universal force of attraction between all matter with?mass This force is known as the ‘force due to gravity’ or the?weight The Earth’s gravitational field is...
Edexcel A Level Physics:復習筆記12.1 Gravitational Fields
Gravitational Fields Generally, a?force field?is a region of space in which an object will experience a?force A?gravitational field,?therefore, is a region of space in which any object with?mass?ex...
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