Exam 2 Formula Sheet - Introductory Physics-Mechanics, Thermodynamics | PHYS 1111, Study notes of Physics

Download Exam 2 Formula Sheet - Introductory Physics-Mechanics, Thermodynamics | PHYS 1111 and more Study notes Physics in PDF only on Docsity! Physics 1111 Exam #2 2 July 2009 Formula Sheet (Nothing written on this sheet will be graded) Kinematics: Definitions !r ! x x̂ + y ŷ + z ẑ !!r !!rf "!ri !v ! !!r ∆t !v ! lim ∆t!0 !!r ∆t !a ! !!v ∆t !a ! lim ∆t!0 !!v ∆t Kinematics: Constant Acceleration Motion (ti = 0) !!v = !at !!r = !vt = 1 2 (!vi +!vf )t !!r = !vit + 1 2 !at2 v2fx = v 2 ix + 2ax(∆x) (etc.) Kinematics: Uniform Circular Motion T = 2πr v ar = v2 r = 4π2r T 2 = 2πv T Dynamics Definitions Work: W ! Fd cos θ (constant force) Power: P ! W t = Fv cos θ Kinetic energy: K ! 1 2 mv2 Potential energy: Wc = "∆U Total mechanical energy: E ! K + U Theorems/Laws Newton’s 1st Law: !Fnet = 0 =# !v constant Newton’s 2nd Law: ! !F = m!a Newton’s 3rd Law: !F12 = "!F21 Work-Energy Theorems: Wtot = ∆K Wnc = ∆E (E constant if Wnc = 0) Friction: fs $ µsN fk = µkN Gravitation: F = mg U = mgy Springs: F = "kx U = 1 2 kx2 Algebra and Trigonometry az2 + bz + c = 0 =# z = "b ± % b2 " 4ac 2a sin θ = opp hyp cos θ = adj hyp tan θ = opp adj sin2 θ + cos2 θ = 1 Numerical Data g = 9.81 m/s2