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. Newton's 1st Law of Motion: https://www.youtube.com/watch?v=Fr5EMXZaujc Newton's 2nd Law of Motion: https://www.youtube.com/watch?v=Ee6CHn0MRKE Newton's 3rd Law of Motion: https://www.youtube.com/watch?v=TxhESW6YtOg Mass Vs Weight: https://www.youtube.com/watch?v=LB_WoV071vc Free Body Diagrams: https://www.youtube.com/watch?v=52R61aSWHg0 ____________________________ Normal Force Problems: https://www.youtube.com/watch?v=uyJTwljKSJ4 Elevator Physics Problem: https://www.youtube.com/watch?v=sVVKpRvuNG0 Net Force Physics Problems: https://www.youtube.com/watch?v=tfAJDST3cjo What Is a Normal Force? https://www.youtube.com/watch?v=fRQq4_ry9-Q Static Friction and Kinetic Friction: https://www.youtube.com/watch?v=RIBeeW1DSZg ______________________________ Physics Forces Review: https://www.youtube.com/watch?v=pL2YfC-22Uc Centripetal Acceleration: https://www.youtube.com/watch?v=ZbLirQuT9uU Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections Physics PDF Worksheets: https://www.video-tutor.net/physics-basic-introduction.html