From 7979f074faeb012244fea5af131aeccda6b27146 Mon Sep 17 00:00:00 2001 From: eggy Date: Sat, 21 Nov 2020 12:44:04 -0500 Subject: [PATCH] phys: gravitational field strength --- docs/sph3u7.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/docs/sph3u7.md b/docs/sph3u7.md index 6507616..3645164 100644 --- a/docs/sph3u7.md +++ b/docs/sph3u7.md @@ -596,6 +596,11 @@ The net gravitational force acting on an object is equal to the resultant vector A **force field** is a model representing a region of space where a mass or charge experiences a **non-contact** force. Its units are newtons per kilogram (for mass) or newtons per coulomb (for charge). A gravitational field surrounds every mass and exerts a force equal to that given by Newton's law of gravitation, extending infinitely into space. +The **gravitational field strength** at any point in the field represents the force per unit of mass experienced by any mass—it is constant for any mass at the same distance $r$. +$$|\vec{g}|=G\frac{M}{r^2}$$ + +Its units also make it equivalent to the acceleration experienced by that mass. +$$F_G=m\vec{g}$$ ## Resources