physics’1210’ spring2016’ prof.’jang2condell’...
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Physics 1210 Spring 2016
Prof. Jang-‐Condell
Equation Sheet For Exam #2
vavg =x2 − x1t2 − t1
=ΔxΔ t
aavg =v2 − v1t2 − t1
=ΔvΔ t
arad =v2
R=4π 2RT 2x1 = x0 + v0t + 1
2 at2 v1 = v0 + at v1
2 = v02 + 2a(x1 − x0 )
v = drdt
a = dvdt
F∑ =ma
w =m g fs ≤ µsN fk = µkN f = k v f = Dv2 fspring = −kx
Work/Energy W =
F ⋅ s = Fscosθ
W = ΔK K = 12mv
2 Uspring = 12 kx
2 Ugrav =mgy
P = ΔWΔ t
=F ⋅ v
F = − dUdx
Momentum/Impulse p =mv
K1 +U1 +Wother = K2 +U2
J = Δ(mv) = FΔt xcm =mi∑ xim∑ i
Angular Motion
Kinematics
θ1 =θ0 +ω 0 t + 12α t
2 ω1 =ω 0+α t ω 21 =ω0
2 + 2α (θ1 −θ0 )
I = miri2
i∑ I = Icm +Md
2
ω =dθdt
α =dωdt s = rθ v = rω atan = rα arad =ω
2r 2π = 360
g = 9.80 m/s2
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