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Unit 3

3.3 Gravitational and Electric Forces

1 min readβ€’june 8, 2020

peter57616

Peter Apps


AP Physics 1 🎑

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Essential Knowledge 3.C.1 πŸ’«

Gravitational force describes the interaction of one object with mass with another object with mass.
https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2F-njmf8ZJP1W7k.webp?alt=media&token=2ce55f4f-dd18-4d57-a16f-a51c1c59c713

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
⟢ Still feeling a little confused on Newton’s Universal Law of Gravitation? Don’t worry! Check out this video from Khan Academy for more practice!
https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2FScreen%20Shot%202020-04-08%20at%203.57.33%20PM.png?alt=media&token=4c7ea7ef-159d-4507-870e-be74fc43c865
https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2FScreen%20Shot%202020-04-08%20at%204.00.29%20PM.png?alt=media&token=e542a975-23b5-4f1f-bb41-1d1b3a063435
πŸŽ₯Watch: Khan Academy - Angular Motion Variables
πŸŽ₯Watch: AP Physics 1 - Unit 3 Streams

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