Zwaartekracht in beweging (4) Flashcards

1
Q

1e wet Kepler (Ellipswet)

A

r(φ) = a(1 -e^2)/ ( 1 + ecos(φ))
- b = a * wortel(1 - e^2)
- Opp = πa^2
wortel(1 - e^2)

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2
Q

2e wet Kepler (Perkenwet)

A

rv_φ = r^2*φ’ = C
- baanimpulsmoment van de planeet
behouden

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3
Q

3e wet Kepler (Harmonische wet)

A

P^2 = C* a^3
P^2 = 4π^2*a^3 / G(M+m)

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4
Q

Zwakke equivalentie principe

A

Stel F = m’a = -GMm/r^2, geeft:
a = - m/m’ * GM/r^2
–> m’/m ~= c, en dus vallen alle objecten
naar een massa met dezelfde snelheid

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5
Q

Inproduct

A

a . b = abcosφ

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6
Q

Uitproduct

A

|a × b| = ab sin θ , waarvoor geldt:
(a × b) . a = (a × b) . b = 0

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7
Q

Impulsmoment

A

L = r × p = r × mv

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