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Institute of Physics
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Episode 400: Preparation for Gravitational Fields Topic *suitable for home teaching*
This series of sessions, produced by the Institute of Physics, develops the idea that Newton’s Law of Universal Gravitation is precisely that; universal. Every single object with a mass in the universe gravitationally attracts every other object with mass. By following the learning episodes in this topic, students will:
1. understand the concept of a field and its depiction with field lines
2. understand and use Newton’s law of universal gravitation
3. understand what is meant by an inverse square law
4. understand and use the term field strength
5. understand and use the terms potential energy and potential and know that the zero of potential is defined to be at infinity
6. understand that the gradient of potential is related to field strength
7. understand the motion of objects in gravitational fields (circular orbits only, including geosynchronous orbits).
The learning episodes in this series are:
Episode 401: Newton’s law of universal gravitation
Episode 402: Fields, field lines and field strength
Episode 403: Orbital motion
Episode 404: Gravitational potential energy and gravitational potential
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Gravitational fields 43 KB
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