Grundlagen Der Mechanik Flashcards

1
Q

Formel Kraft

A

F = m*a [N]

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2
Q

Formel Gewichtskraft

A

G = m * 9,81 m/s^2

[N]

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3
Q

Formel Impuls

A

p = m*v

[Ns]

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4
Q

Formel Geschwindigkeit

A

v = s/t

[m/s]

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5
Q

Formel freier Fall

A

v = g*t

g = 9,81 m/s^2

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6
Q

Formel Beschleunigung

A

a = ∆v/∆t

[m/s^2]

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7
Q

Weg-Zeit-Gesetz ohne Anfangsgeschwindigkeit

A

s = 1/2 a * t^2

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8
Q

Formel für Beschleunigung ohne Anfangsgeschwindigkeit

A

a = v/t

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9
Q

Formel für gleichmäßige Beschleunigung aus der Ruhe oder zum Stillstand

A

a = v^2 / (2s)

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10
Q

Drehmoment

A

M = r * F

[Nm]

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11
Q

Anzahl der Drehungen pro Zeiteinheit

A

n = ΔN / Δt

N = Anzahl der Drehungen

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12
Q

Drehleistung

A

P = M × 2π × n

[W]

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13
Q

Drehimpuls

A

L = I × ω

[kg*m^2/s]

I = Trägheitsmoment

ω = Winkelgeschwindigkeit

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14
Q

Kinetische Energie

A

E kin = 1/2mv^2

[Nm]

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15
Q

Potentielle Energie

A

E pot = mgh

[Nm]

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16
Q

Hubarbeit

A

W = G * h [ J ] = [Nm] = [Ws]

G = Gewichtskraft
H = Höhe
17
Q

Beschleunigungsarbeit

A

W = mas = F * s

[Nm]

18
Q

Leistung

A

P = W / ∆t

[J/s]

19
Q

Längenänderung

A

ε = Δl/l

20
Q

Hook’sches Gesetz

A

F = E * A * ε

F = Zugkraft
E = Elastizitätsmodul
A = Querschnittsfläche
ε = Dehnung
21
Q

Was ist das Elastizitätsmodul?

A

Beschreibt Verhalten eines Materials bei Verformung als entstehende Spannung in Relation zur beobachteten Dehnung

E = σ / ε
[N/m^2]

22
Q

Zugspannung

A

σ = F / A

[N/m^2]

23
Q

Was ist die Spannenergie?

A

Energie, die in einer gespannten Feder gespeichert wird

E = 1/2 D * s^2

24
Q

Dichte

A

ρ = m / V

[g/L]

25
Q

Druck

A
p = F/A
[Pa] = [kg / (m*s^2)]
26
Q

Was ist der hydrostatische Druck?

A

Schweredruck = Druck, der durch Gravitation in einer Flüssigkeit entsteht

p = ρFlüssigkeit × g × h

27
Q

Auftrieb

A

F A = GFlüssigkeit
= mFlüssigkeit × g
= ρFlüssigkeit × VKörper × g

28
Q

Hebelgesetz

A

Kraft [N] × Kraftarm [m]

= Last [N] × Lastarm [m]

29
Q

Zentrifugalkraft

A

Fz = m × az = m × v^2 / r = m × r × ω^2

30
Q

Zentripetalbeschleunigung

A

a z = v^2/r = ω^2 × r