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Understanding Mass and Force: Key Concepts in Physics

This article explores the foundational concepts of mass and force, highlighting their significance in understanding the physical world. It defines mass as the amount of matter in objects and explains why some items weigh more than others despite occupying the same space. Furthermore, it delves into the definition of force, illustrating it with examples such as skydiving and lifting heavy objects. The relationship between force, mass, gravity, lift, weight, drag, and thrust is discussed, emphasizing their equations and systems in mathematical applications.

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Understanding Mass and Force: Key Concepts in Physics

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  1. Forces

  2. 2 Important Points • What is mass? • The AMOUNT of matter making up things • Certain things weigh more than others although they take up the same space • What is force? • Force is the strength of the object to move in a certain direction • It is basically an object (with mass) with acceleration • Example: Skydiving • You speed up. Air underneath you can’t push back enough to keep you in the air. • Gravity wins. Adapted from the Wikimedia Commons file “Tandemskydive.png“http://upload.wikimedia.org/wikipedia/commons/2/2c/Tandemskydive.png

  3. Another Example • Lifting up on something heavy • Like a table • The table wins. • Force of the table’s weight pushes down and you can’t lift up with enough force to get it off the ground. Adapted from the Wikimedia Commons file “Force_examples.svg“http://en.wikipedia.org/wiki/File:Force_examples.svg

  4. How Does this Apply to Math? • Lift • Has an equation • Weight • Also has an equation • (Force=mass * gravity) • Drag • Has an Equation • Thrust • Has an Equation • THEY ARE SYSTEMS • Opposing equations are set equal to each other to solve for (as an example): • The LIFT needed to overcome the WEIGHT of the plane! Adapted from the Wikimedia Commons file “Aeroforces.svg“http://en.wikipedia.org/wiki/File:Aeroforces.svg

  5. How Does this Apply to Math? FORCE OF LIFT • Lift • Has an equation • Weight • Also has an equation • (Force=mass * gravity) • Drag • Has an Equation • Thrust • Has an Equation • THEY ARE SYSTEMS • Opposing equations are set equal to each other to solve for (as an example): • The LIFT needed to overcome the WEIGHT of the plane! • During this process, you solve for variables! Adapted from the Wikimedia Commons file “Boeing_747-8_N747EX_First_Flight.jpg“http://en.wikipedia.org/wiki/File:Boeing_747-8_N747EX_First_Flight.jpg WEIGHT

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