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Samenvatting Natuurkunde h9 vwo 5

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Samenvatting natuurkunde h9 arbeid energie en vermogen

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Natuurkunde hoofdstuk 9, Sport en verkeer  Arbeid, energie en vermogen



9.1 introductie



Met enkele krachten kun je de grootte uitrekenen met een formule:



Zwaartekracht Fz= m x g
m= massa in kg
g= valversnelling (9,81 N/kg)
Fz= in N

Veerkracht Fv= C x u
C= veerconstante (N/m)
u= uitrekking (in m)

Maximale schuifwrijving Fws,max= f x Fn
f= constante
Fn= normaalkracht (in N)

Luchtweerstand Fwl= ½ x cw x p x A x v^2
cw= luchtweerstandscoëfficiënt
p= dichtheid van de lucht (in m/s)
A= frontale oppervlakte van het voorwerp (in
m^2)
v= snelheid (in m/s)

Fwl= k x v^2
k= ½ x cw x p x A




Spankracht (Fs) en normaalkracht (Fn) worden niet berekend met een formule

- Ze zijn reactiekrachten, ontstaan als gevolg van een andere kracht

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Hoofdstuk 9
Uploaded on
December 5, 2022
Number of pages
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Written in
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Type
SUMMARY

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