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