Eqn Sheet (1)

P const system system if external f external 0 0 rd

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Unformatted text preview: m Conservation of momentum Conservation of Force Fc = momentum ∑ L = const. ∑ p = const. system system if ∑τ external ∑F external =0 =0 rd ∑τ = 0 Newton’s 3 law (law of action-reaction): F12 = -F21 if ©Prep101 Energy Rectilinear Motion Circular Motion Work (in 1D, F = const.) W = F⋅s Power (F = const.) P= P= dW = F ⋅v dt Work (τ = const.) W = τ⋅θ Power (τ = const.) dW =τ ⋅ω dt Kinetic energy K = ½⋅m⋅v2 Kinetic energy K = ½⋅I⋅ω2 (h - height) Potential energy (work in gravity) Ug = m⋅g⋅h Note: In conservative systems we have conservation of mechanical energy: K + U = const. STUDY LIST Chapter 1 • Know how to manipulate algebraic equations, how to apply trigonometric formulas to problems, and how to deal with vector quantities and ratios Chapter 2 and 3 • Know the difference between speed and velocity • Be able to apply the equations of motions for constant acceleration to freely falling objects and projectile motion Chapters 4 and 5 • Understand Newton’s first, second and third law • Be aware of the difference between mass and weight • Know about the calculation of the normal force and its connection with friction • Be able to use the concept of a free-body diagram to determine the net force in a system Chapters 6 and 7 • Understand the concept of work • Know the definition of kinetic and potential energy as well as power • Be able to use the law of conservation of energy to calculate the conversion from one...
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