Fucking equations Flashcards by Sarah Solomon | Brainscape

Q

Kinetic Energy

A

1/2mv*2

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Q

Work done by a constant force

A

w=fdcosø

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Q

Hooke’s law

A

F=-kx

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Q

Work done by a spring force

A

Ws=1/2kx*2

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Q

Gravitational potential energy

A

mgh or -GMm/r

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Q

Elastic potential energy

A

1/2kx*2

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Q

Impulse

A

J=Favg∆t

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Q

Inelastic collisions

A

m1v1i+m2v2i=m1v1f+m2v2f

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Q

Elastic collisions

A

V1f=(m1-m2/m1+m2)V1i and V2f=(2m1/(m1+m2))V1i

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Q

Kinematic equations

A

v=vo+at, ∆x=1/2at2+vot, v2=vo*2+2a∆x

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Q

Period

A

(2πr)/v, (2π)/w

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Q

Rotational Kinetic Energy

A

K=1/2Iw*2

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Q

angular frequency

A

w=†(∆ø), w=2π/T, w=square root of k/m

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Q

Torque

A

†=rFsinø

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Q

Parallel axis theorem

A

I=Icom+Mr*2

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Q

Kinetic energy for a rolling object

A

1/2Icomw2+1/2Mvcom2

Q

Gyroscope

A

Ω=(Mgr)/(Iw)

Q

Gravitational force

A

G(M1M2)/r*2

Q

Angular momentum

A

L=rmvsinø, L=Iw

Q

Gravitational acceleration

A

ag=GM/r*2

Q

Gravitation within a shell

A

Mins=p(4πr*3)/3

Q

Escape velocity

A

Square root of 2GM/r

Q

Law of periods

A

T2=(4π2/GM)r*3

Q

Simple harmonic motion

A

X=Xmcos(wt+ø)

Q

Period(oscillations)

A

T=2π times the square root of m/k

Q

Dampening constant

A

e*-bt/2m

Q

w’

A

Square root of (k/m)-(b2/4m2)