# Shared Flashcard Set

## Details

Rotational Motion & Grav
Rotational Motion & Grav
14
Physics
11/08/2008

Term
 θ [image]
Definition
 θ (radians) = l/r (l = arc length)
Term
 ω (angular velocity) (3)
Definition
 = Δθ/Δtfound using right hand rule = 2∏rf or 2∏r/T
Term
 α (angular acceleration)atan (tangential acceleration) aR (centripetal acceleration)[image]
Definition
 α = Δω/Δt  atan = rαaR = ω2r = v2/r
Term
 [image]
Definition
 v=rω
Term
 frequency (3)
Definition
 f = ω/2Πmeasured in hertz (Hz) 1 Hz = 1 s-1cycles completed or revolutions per second
Term
 Period T (2)Period of simple pendulumPeriod of springOrbital Period
Definition
 time one revolution takes, time required to complete one cycleT = 1/f T = 2∏√(l/g) (l=lenth of string) T = 2∏√(m/k) T = 2∏√(r3/Gm)
Term
 Angular Kinematic Equations (4)
Definition
 [image]
Term
 torque (τ)
Definition
 τ = r┴F
Term
 rotational inertia (I)
Definition
 I = Σmr2
Term
 KErotational
Definition
 KErotational = 1/2 Iω2
Term
 WRotational
Definition
 τΔθ
Term
 Angular Momentum (L)
Definition
 = Iω
Term
 Orbital Velocity, vc
Definition
 vc=√(Gm/r)
Term
 Fgrav (2)
Definition
 F = GMm/R2F = mv2/R
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