Exam 2 Study Guide
Formulas to Know
∙ Static friction
μs - The coefficient of friction (dependent on what the surface is) F N - Normal Force
∙ Kinetic Friction
μk -coefficient of kinetic friction (unitless)
FT- The force of tension
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∙ Rolling friction
μr -coefficient of rolling friction
∙ Drag force
b- the experimental constant. It is negative to show it’s moving opposite velocity (v). Don't forget about the age old question of What is the meaning of aromatic anions?
∙ For the drag force on blunt objects (What we mostly will work with) drag force is shown by:
F D=12C Aρ v2
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:
F C=mv2r If you want to learn more check out What is the meaning of a specific epithet?
If the origin is in a polar coordinate system
a=r p+r A
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 =a[AU ]
T[ yr ]
∙ Newton’s law of universal gravity shows:
G- The gravitational constant= 6.673E-11
∙ The gravitational field of any source can be found from:
Unit vector pointing away
g (r)=−GM Don't forget about the age old question of What is the meaning of social control?
r2(¿ particle) Don't forget about the age old question of How do i start a farmers market in my community?
∙ Kinetic Energy
This answer is in Joules
∙ Potential Energy
PE=mgh If you want to learn more check out What is the most significant agent of socialization?
∙ To find gravitational potential energy:
∙ Elastic potential energy:
K= the spring constant
∙ The sum of a systems Potential and Kinetic energy is its mechanical energy. This is shown by:
∙ The conservation of mechanical energy is shown by:
∆ K+∆U =0