equations03su - kg N 225 1 1 2 = ⋅ = 2 2 11 10 67 6 kg Nm...

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Useful Equations for Physics 211 Last Updated 6/25/07 dt r d v t x v av t = = , t a v v x ix fx + = a m F = dt v d a t v a av = = , t v v x fx ix + = ) ( 2 1 BA AB F F - = 2 f i av v v v + = 2 2 1 t a t v x x ix + = w = mg x a v v x ix fx + = 2 2 2 N f k k μ = 2 2 2 4 T r r v a r π = = T r v π 2 = N f s s μ dt v d a t = A B B P A P v v v + = V m = ρ θ cos Fs s d F W f i s s = = dx dU F x - = x k F Spring - = | F spring | = k | x | f f i i nc U K U K W + = + + K W net = 2 2 1 kx U spring = θ cos Fv v F t W dt dW P = = = = 2 2 1 mv K = mgh U grav = Useful Constants/Conversion Factors: 1 in = 2.54 cm 1m = 3.28 ft 1 km = 0.621 mi 2 2 32 8 . 9 s ft s m g = = Circle: Circumference=2πr Area=πr
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Unformatted text preview: kg N 225 . 1 1 2 = ⋅ = 2 2 11 10 67 . 6 kg Nm G-× = Sphere: Area= 4π r 2 Volume=(4/3)π r 3 1 J = 1 N∙m = 0.239 cal 1 radian = 57.3° 1 revolution = 360° = 2π rad Cylinder: Area=2πrh Volume= πr 2 h 1 W = 1 J/s = 1.34×10-3 hp 1 kg weighs 2.205 lb near the earth’s surface...
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