AP Physics 1 Crash Course for Spring 2021 ๐ŸŽก

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3.3 Gravitational and Electric Forces

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#newtons

#angularmotionvariables

#mass

#acceleration

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.

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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!

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๐ŸŽฅWatch: Khan Academy - Angular Motion Variables

๐ŸŽฅWatch: AP Physics 1 - Unit 3 Streams

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