AP Physics 1 Crash Course for Spring 2021 ๐ŸŽก

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๐Ÿงย  Multiple Choice Questions (MCQs)

3.3 Gravitational and Electric Forces






โฑ๏ธย ย 1 min read

written by

Peter Apps

peter apps

June 8, 2020

Essential Knowledge 3.C.1 ๐Ÿ’ซ

Gravitational force describes the interaction of one object with mass with another object with mass.


Image courtesy of Giphy.

Key Concept: Gravitational Force

- a model used to explain the influence that an object extends into the space around itself, producing a force on another object. This force is always attractive.

Equation: Fg = mg, where Fgis the Force of Gravity in Newtons, m is mass in kilograms, and g is the acceleration due to gravity in m/s/s

Key Concept: Newton's Universal Law of Gravitation

- every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Equation: Fg = Gm1m2/r^2, where Fg is the Force of Gravity in Newtons, G is the gravitational constant 6.7 x 10^-11 N*m^2/kg^2, m is mass in kilograms, and r is the radius in meters

โŸถ Still feeling a little confused on Newtonโ€™s Universal Law of Gravitation? Donโ€™t worry! Check out this video from Khan Academy for more practice!



๐ŸŽฅWatch: Khan Academy - Angular Motion Variables

๐ŸŽฅWatch: AP Physics 1 - Unit 3 Streams

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