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  1. Dynamics
  2. Law of Universal Gravitation and Kepler's Law
  3. Gravitational Field
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Force and Newton's Law of Motion
Applications of Newton's Laws of Motion
Frictional Forces
Centripetal Acceleration and Circular Motion
Law of Universal Gravitation and Kepler's Law
Newton's Law of Universal Gravitation
Law of Gravitation Example # 1
Law of Gravitation Example # 2
Law of Gravitation Example # 3
Gravitational Force on Space Shuttle
Gravitational Force on Moon due to Sun and Earth
Calculation of Gravitational Acceleration
Effect of Earth's Rotation on Weight and Gravitational Constant
Satellite Motion and Geosynchronous Satellites
Catching a Satellite in Orbit
Apparent Weightlessness
Kepler's Laws of Planetary Motion
Derivation of Kelper's Third Law
Calculation of Mass of the Sun
Perturbations
Lagrange Point
Lagrange Point (L1) Calculation
Gravitational Field
Principle of Equivalence and Curvature of Light

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Gravitational Field

Content Provider AK Lectures
Description The concept of the gravitational field was created to explain how a force such as gravity can act over a distance. Newton himself was uneasy when he published his law of universal gravitation because at the time scientists only spoke of contact forces. Gravity, which is a non-contact force has the ability to act over a distance and is therefore considered an "invisible force". Every single object with mass creates a gravitational field composed of field lines running perpendicularly outward from the mass, thereby permeating all of the space. These field lines interact with other masses and pull them inward. The magnitude of the gravitational field can be calculated by placing a test mass into the field at some point, determining the force the test mass feels and dividing that force by the mass of the test mass. The units of the gravitational field are given in Newton per kilogram. Note that the gravitational field at the surface of the Earth is identical to the gravitational acceleration of objects at the surface of the Earth. Therefore, all objects will accelerate with the same exact value regardless of their mass.
Language English
Access Restriction Open
Subject Keyword Classical Physics law act gravitation gravity units ability space Gravity object
Content Type Video
Educational Role Teacher Student
Educational Use Self Learning Lecture Reading
Resource Type Video Lecture
Education Level Under Graduate
Subject Classical mechanics; solid mechanics
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