Determine the angle 8 between the force and the line AO

PY 205 with Daniel Dougherty Week 1 Chapter 1 1/12/2016  Theory – broader, more detailed and can give quantitatively testable predictions, often with great precision  Law – certain, concise but general statements about how nature behaves  Principle- less general statements o Scientific laws are descriptive because they describe how mature behaves  Uncertainty and percent uncertainty o Ratio of uncertainty to the measured value X 100 to make it a percent o Ex: 8.8 +/- .1cm .1/8.8 X 100 = 1%  Significant figures o 0 is a placeholder o Ex: 80  one significant figure since 0 does not count o RULE: number of significant figures in the last number should be the same as the least significant value  ORDER OF MAGNITUDE ESTIMATE – can be accurate to the factor of 10 but is usually more accurate than that  Dimensional analysis is used in order to work out the relationships between objects Chapter 2 1/14/2016 KINEMATICS  Kinematics describes how objects move  Dynamics – deals with force and why object move as they do o Objects that move without rotating = translocation motion  A concept/model of an idealized particle is considered to be a mathematical point with no spatial extent o Particles are used to describe objects in question o The frame of reference is where the object is SPEED, POSITION, ACCELERATION, VELOCITY  Important variables: o X = positi