phys: add weight magnitude equation

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eggy 2020-10-15 13:46:41 -04:00
parent e09497d16a
commit 294a826875

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@ -350,7 +350,7 @@ Contact (the two objects are touching) forces:
Non-contact forces: Non-contact forces:
- **Weight** ($\vec{W}$) is the attraction between a mass and a planet. Its vector always points toward the planet. - **Weight** ($\vec{W}$) is the attraction between a mass and a planet. Its vector always points toward the planet. The magnitude of weight is equal to the mass of the object times the acceleration due to gravity ($mg#).
- **Electromagnetic forces** ($\vec{F_M}$ and $\vec{F_E}$) are not covered in this course. - **Electromagnetic forces** ($\vec{F_M}$ and $\vec{F_E}$) are not covered in this course.
The origin and target of a force are placed in the subscript of that force. The origin and target of a force are placed in the subscript of that force.