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
∙ Rolling friction
μr -coefficient of rolling friction
∙ Drag force If you want to learn more check out What is the meaning of rigid in packaging?
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:
F D=12C Aρ v2
C- The drag coefficient
ρ- The density of the medium
A- The object’s perpendicular cross-sectional area
If you want to learn more check out What is the other term for arenes?
v- The speed of the objects
∙ The magnitude of centripetal force is found by:
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. We also discuss several other topics like What is the meaning of a specific epithet?
∙ 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: We also discuss several other topics like What is the meaning of formal social control?
G- The gravitational constant= 6.673E-11
∙ The gravitational field of any source can be found from:
Unit vector pointing away
∙ Kinetic Energy
This answer is in Joules
∙ Potential Energy
∙ To find gravitational potential energy:
UG (r)=−Gm1m2 We also discuss several other topics like Did the doctors who took part in genie’s study act as professionally as
they should have?
We also discuss several other topics like How are supply and demand is influenced by the labor market?
∙ 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