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CHAPTER 6: WORK AND ENERGY - Coggle Diagram
CHAPTER 6: WORK AND ENERGY
Work Done by a Constant Force
distance moved multiplied by force
W= Fd cosθ where θ = the angle between force and displacement
S.I. Unit: Joule (J) 1J = 1Nm
Work done by a force is 0 when the Force is perpendicular to the distance. W= Fd cos 90° = 0J
KInetic Enegry and the Work Energy Prnciples
Work Energy Principles
Kinetic Energy
An object has Kinetic Energy if it has mass and it's moving.
Work Done by a Varrying Force
If the displacement Δx is small,
we can take the force F (x) as approximately constant and the work done is then, ΔW =F (x) Δx
Force is not constant.
Total Work Done =
Work Done by a spring
Scalar Product of Two Vectors
Dot product
