r r r τ ≡r ×F τ ≡ r⊥ F
K ≡ 12 mv 2
K = Iw U = mgy 1 2
2
I = mr 2 I = Icm + m d 2
U = 12 k x 2
W = F| ∆r r W = F ⋅ ∆r
G m1 m 2 U =− r r r p ≡ mv r r Lr = I w r r L ≡r ×p L = r⊥ p
W = τ ∆θ
W = − ∆U dU Fx = − dx
x = xo +vo t + 12 at 2 vo + v
x = xo +
2
2
t
= vo2 + 2 a∆ x
θ = θo + wo t + 12 a t 2
wo + w
θ = θo +
2
w = wo + a t
t
w 2 = wo + 2a ∆θ 2
v =rw at = r a
dE dt r r P = F ⋅v r r J ≡ F∆ t r r J =∆p
P≡
v = vo + a t v
W = ∆K
d 2x = − (2πf ) 2 x 2 dt
x = x max cos(2π f t ) v = −v max sin(2π f t ) a = − a max cos(2π f t )
FS = k x
Gm g= 2 r v v F = mg
L T = 2π g T = 2π
m k
1 f = T 2 ∂ 2y 1 ∂y = ∂x 2 v 2 ∂t 2
y = y max cos ( 2λπ x − 2Tπ t )
G m1 m 2 F= r2 fK = µK N
v =
λ = λf T
fs
v =
FT µ
MAX POSSIBLE
v 1 v a = ∑τ I
= µS N
µ=
m L
V
P= F A P = Po + r g h
PG = P − Po
.
m = r Av . . m1 = m2 A1v1 = A2v 2
Q = mc ∆T Q = ml ∆U = Q −W
amax = (2π f ) 2 x max
r r 1 a = ∑F m W = mg
r=m
P + 12 r v 2 + r g h = constant
v max = (2πf ) x max
2 ac = vr ac = r w 2
I = (Amplitude) fBEAT = fHIGH − fLOW v ± vR f′= f v m vS
11/5/06
2
Trigonometric Identities
(sin θ ) 2 + (cosθ ) 2 = 1 2 sin θ cosθ = sin( 2θ )
Constants
g = 9.80 N kg ag = 9.80
(near earth)
m s2
G = 6.67 × 10 −11
N ⋅ m2 kg 2
mE = 5.97 × 10 24 kg r E = 6.38 × 10 6 m I o = 1.00 × 10 −12
W m2
m vsound = 343 s 1.000 atm = 1.013 × 10 5 Pa
rwater = 1.00 × 10 3
kg m3
1.000 cal = 4.186 J
c water = 4186
J kg ⋅ C o