Mechanics11/Seite13/Loesung4.12

--Anki 11:11, 11 April 2008 (UTC)

m = 200g = 0,2kg

t = 0,35 s

a = 9,81 $$\frac{m}{s^2}$$

a)p = m * v

p = m * $$\Delta t$$* a

= 0,2kg * 0,35s * 9,81$$\frac{m}{s^2}$$

= 0,6867 Ns

b)p1 = m * v

= 0,2kg * 3,1$$\frac{m}{s}$$

= 0,62 Ns

p2 = 0,6867 Ns

$$\Delta p$$ = p-(-p2) = 1,31 Ns

c)$$\Delta p$$ = F * $$\Delta t$$

->F = $$\Delta p$$ : $$\Delta t$$

= 1,31 Ns : 4,3 * 10^-2 s

= 30 N