PHY Cheat Sheet - SOH-CAH-TOA [ ] [ ] [ ] [ ] [ ] 2 2 / v x...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: SOH-CAH-TOA [ ] [ ] [ ] [ ] [ ] 2 2 / v x L T L a t T T t = = = = 2 2 2 r x y = + 2 4 2 b b ac a- ±- f i X X X ∆ =- . . . tot dist Avg Speed tot time = X V t ∆ = ∆ u v V a t ∆ = ∆ v 2 1 2 h at = D V T = ⋅ x a = 9.81 y a = - o V V at = + 2 1 2 o X V t at ∆ = + 2 2 2 f o V V a X = + ∆ 2 2 x y V V V = + 1 tan y x V V θ- = cos x o o V V θ = sin y o o V V θ = F ma = ∑ u v w mg = Atwood’s Machine: 2 1 1 1 2 m m a g m m - = + 2 1 1 2 m m T g m m ⋅ = + s f F = - , , , s s F f F f ↑ ↑ ↓ ↓ k F f = max s s f f n μ = = ⋅ k k f n μ = ⋅ s k μ μ 1 2 ( ) T T mg +- = To Find Largest Angle: ( 29 1 tan s θ μ- = sin cos k incline a g g θ μ θ ↓ =- ( 29 new o S g S a g = + 2 1 1 2 k m g m g a m m μ - = + Relative Velocity : the velocity of an object relative to the velocity of the observer AB AE BE V V V =- AB AE BE r r r =- ● AE r = position of car A as measured by E ● BE r = position of car B as measured by E ● AB r = position of car A as measured by car B Avg. Velocity: slope of a straight line connecting the final/initial points. Sig. Digits: +/- (smallest # of decimal places of any term) x/ (digits in final answer = # w/ the least digits). Dynamics: study of motion and physical concepts (force & mass). Kinematics : part of dynamics that describes motion w/o cause. Vector: magnitude and direction. Scalar: only magnitude. Newton’s 1 st Law: an object moves with a velocity that is constant in magnitude & direction, unless acted on by a NON-ZERO net force. --“objects move b/c the opposite force is exherted on a diff. object then the one being moved”. Inertia : tendency of an object to continue in its original state of motion; it’s a property of matter to resist changes in motion. Mass : measure of an objects resistance to changes in its motion due to a force (kg) *greater the mass, the less it accelerates under a force, greater its inertia. Newton’s 2 nd Law: accel. of an object is directly proportional to the net force acting on it, inversely prop to its mass. Gravitational Force : mutual force of attraction btwn any 2 objects in the universe (weakest of all fundamental forces). Newton’s Law of Gravitation : every particle attracts every other particle w/ a force that is directly proportional to the product of the masses, inversely prop. to the square of the distance between them. Newton’s 3 rd Law: Forces in nature come in pairs. Force exerted by object 1 on 2 is equal to the opposite force exerted by object 2 on 1. (action – reaction). Tension: magnitude of the force exerted along a rope – it’s the same at all points on the rope....
View Full Document

This note was uploaded on 02/09/2009 for the course PHY 320 taught by Professor Lui during the Spring '09 term at University of Texas at Austin.

Page1 / 4

PHY Cheat Sheet - SOH-CAH-TOA [ ] [ ] [ ] [ ] [ ] 2 2 / v x...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online