Physics - What Is The Difference Between Mass and Weight?

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This physics video tutorial explains the difference between mass and weight. In addition, it discusses how to calculate the force of gravity acting on an object given its mass and how to calculate the gravitational acceleration given the mass and weight force.

Forces - Formula Sheet:

Newton's 1st Law of Motion:

Newton's 2nd Law of Motion:

Newton's 3rd Law of Motion:

Mass Vs Weight:

Free Body Diagrams:

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Normal Force Problems:

Elevator Physics Problem:

Net Force Physics Problems:

What Is a Normal Force?

Static Friction and Kinetic Friction:

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The 4 Fundamental Forces:

Physics Forces Review:

Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

Physics PDF Worksheets:

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The first minute of this helped me so much!! I was able to figure out the entire homework when I was just about to give up. :D

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sujal

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xsuhshi

I am preparing for my exam, and this made me understand it 10 times better than the book! Thanks!

Paptis

Thanks for the help, much appreciated

pierovasquez

I have a question. Is weight "always" proportional to mass? or it just proportional when the acceleration due to gravity is constant? This is pretty confusing for me because as mass increases so do weight, does that means they are "always" proportional?

catluong

Science book says things are lighter the further from the ground of earth
And a lighter object can extend the spring less than heavier, maybe it doesn't have to, but does that make sense so a heavier object will extend the spring more And mass, the books say the mass stays the same wherever it is, um doesn't it depend on how much matter, the greater the matter the more difficult to move yes but you can have not much matter and still not do much right, idk and the density well hmm anyhoo, I was thinking west we count ass, east we count mas or at least mass is not one word, thankyou for your video

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perla

Well yes a heavier object may extend the spring more but are they getting any further and what damage is done to the springs and none of these accounts for energy output does it

DanielStone-ywrn