Normal Force Physics Problems With Tension, Inclined Planes & Free Body Diagrams

This physics video explains how to calculate the normal force on a horizontal surface when a downward force is applied or when an upward tension force is used to lift the block. This is useful for solving common physics problems associated with forces and free body diagrams.

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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Physics Forces Review:

Centripetal Acceleration:

Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

Physics PDF Worksheets:

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[gulnazturgaliyeva]

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[mharakarmnx]

If the box is on a horizontal surface and there is no other force than gravity the normal force will equal the weight
2-if there was pressure on the box the normal force will increase normal force=weight+the pressure

3- if there was a rope pulling the box the normal force will decrease normal force =weight-the tension force

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[yeahyeah]

I have a question on 16:23 . Can we use the equation Fn= -W + Ty instead because since the weight force is acting downwards then I see it better as negative. Or should I just use that one. Please answer this has been a question of mine but I can’t seem to find a solid answer

[carloskruut]

At 16:21, shouldn't the net force be equal to about 34 N because 294 - 259 = 34? You're videos are carrying me through uni physics!