EGN 3310-Exam 1 Review

EGN 3310-Exam 1 Review

1 N= Correct Answers =1 (kg*m)/(s²)

1 slug= Correct Answers =1 (lb*s²)/(ft)

Cartesian Vector Notation of Coplanar Forces Correct Answers
F=F(sub x) i + F(sub y) j

*see reference sheet

Coordinate direction angles Correct Answers α [or θ(sub x)]
β [or θ(sub y)]
γ [or θ(sub z)]

cos α= Correct Answers =[A sub x]/A

cos β= Correct Answers =[A sub y]/A

cos γ= Correct Answers =[A sub z]/A

Couple Correct Answers two parallel forces that have the same
magnitude, but opposite directions, and are separated by a
perpendicular distance, d.

Cross product Correct Answers C=ABsinθ

Defn. of Coordinate direction angles Correct Answers The
angle btwn. the tail of a vector and the positive x, y, and z axes,
respectively.

, density [rho] Correct Answers =mass/volume
=m/v

distance a spring is elongated/compressed Correct Answers
s=l-l₀

Dot Product Correct Answers A . B=ABcosθ

equation of equilibrium Correct Answers ∑F=0

equilibrium Correct Answers requires the resultant force
acting on a particle to be zero

Explain the tension distribution of a pulley system Correct
Answers The tension on one side is ALWAYS equal to the
tension on the other side

Finding a moment about an axis Correct Answers M=u*(r×F)

*u is the unit vector along the axis of rotation

gigga- Correct Answers G
10⁹

How to find a force vector (F) when given a force magnitude
and a position vector. Correct Answers F=Fu

F=F[r/|r|]

kilo- Correct Answers k
10³