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Exam 2 Study Guide

by: Jacob Edwards

Exam 2 Study Guide 80218 - PHYS 1220 - 001

Jacob Edwards
GPA 3.2

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These notes cover the formulas of the next exam
Physics with Calculus I
Lih-sin The
Study Guide
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This 3 page Study Guide was uploaded by Jacob Edwards on Sunday March 6, 2016. The Study Guide belongs to 80218 - PHYS 1220 - 001 at Clemson University taught by Lih-sin The in Winter 2016. Since its upload, it has received 232 views. For similar materials see Physics with Calculus I in Physics 2 at Clemson University.


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Date Created: 03/06/16
Exam 2 Study Guide Formulas to Know  Static friction F =μ F smax s N μs - The coefficient of friction (dependent on what the surface is) F N - Normal Force  Kinetic Friction F kμ Fk N μ k -coefficient of kinetic friction (unitless)  Acceleration FT−F k ax= m F T The force of tension  Rolling friction F rμ Fr N μr -coefficient of rolling friction  Drag force F D−bv b- the experimental constant. It is negative to show it’s moving opposite velocity (v).  For the drag force on blunt objects (What we mostly will work with) drag force is shown by: 1 2 F D C2Av C- The drag coefficient ρ- The density of the medium A- The object’s perpendicular cross-sectional area v- The speed of the objects  The magnitude of centripetal force is found by: v 2 F =m C r If the origin is in a polar coordinate system v2 F C−m ^ r Keplers Laws Planetary Motion a= rp+r A 2 1. rp- The perihelion distance 2. rA- The aphelion distance 3. This answer comes in Astronomical Units or AU 4. 1 AU=1.5E11 meters  Were only going to consider the first and the third since they’re the ones formulas apply to.  In Kepler’s third law it says that the square of a planet’s period T is proportional to the cube of its semi-major axis 2 3 T[yr ] [AU ]  Newton’s law of universal gravity shows: m 1 2 FG=G 2 r G- The gravitational constant= 6.673E-11  The gravitational field of any source can be found from: Unitvector pointingaway g(r)=−GM (¿particl) r2 G-Gravitational constant M- Mass r- Radius  Kinetic Energy 1 2 K= mv 2 This answer is in Joules  Potential Energy PE=mgh  To find gravitational potential energy: m m U G( )G 1 2 r  Elastic potential energy: 1 2 U e k x 2 Or U = k y 2 e 2 K= the spring constant  The sum of a systems Potential and Kinetic energy is its mechanical energy. This is shown by: E=K+U  The conservation of mechanical energy is shown by: ∆ K+∆U=0


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