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Gravitational Fields

Cambridge A Level Physics (9702) · 4 topics

Gravitational field

Concept of a Field Physicists use the concept of a field of force to describe non-contact interactions, such as objects falling toward Earth, magnets attracting…
Gravitational force between point masses

Newton's Cannonball Experiment Newton used a thought experiment to explain orbits. If a cannonball is fired from a high mountain fast enough, the curvature of…
Gravitational field of a point mass

Field Strength for a Point Mass Using Newton's Law of Gravitation (F = (GMm/r^2)) and the definition g = F/m, we can calculate the field strength created by a…
Gravitational potential

Why we use Potential The standard formula Δ E_P = mgΔ h only works when g is constant (near the surface). For large changes (like launching satellites), we need…