Mechanics11/Seite13/Loesung4.12
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< Mechanics11 | Seite13
--Anki 11:11, 11 April 2008 (UTC)
m = 200g = 0,2kg
t = 0,35 s
a = 9,81 [math]\frac{m}{s^2}[/math]
a)p = m * v
p = m * [math]\Delta t[/math]* a
= 0,2kg * 0,35s * 9,81[math]\frac{m}{s^2}[/math]
= 0,6867 Ns
b)p1 = m * v
= 0,2kg * 3,1[math]\frac{m}{s}[/math]
= 0,62 Ns
p2 = 0,6867 Ns
[math]\Delta p[/math] = p-(-p2) = 1,31 Ns
c)[math]\Delta p[/math] = F * [math]\Delta t[/math]
->F = [math]\Delta p[/math] : [math]\Delta t[/math]
= 1,31 Ns : 4,3 * 10^-2 s
= 30 N