Respuesta:
5= [tex]1224.48 kg[/tex]
[tex]4800J=m(9.8)x(0.4)4800=m(3.92)m=4800/3.92[/tex]
6=[tex]Vf=15.33 m/s[/tex]
[tex]Ei=(35kg) (9.8 m/s^{2} ) (12m)=4116 J[/tex]
[tex]Ei=Ef[/tex]
[tex]Ef= \frac{1}{2} mV\frac{2}{f}[/tex]
[tex]4116 J=\frac{1}{2} (35kg) V\frac{2}{f}[/tex]
[tex]Vf=15.33 m/s[/tex]
7= [tex]m = 0,005 kg[/tex]
[tex]Ec = 1/2 m[/tex]·[tex]v^{2}[/tex]
590 J = 1/2 m · (450 m/s)
590 J = 1/2 m · 202 500
590 · 2 = m · 202 500 /
1180 J = m · 202 500
m = 1180 J / 202 500 [tex]m^{2} / s^{2}[/tex]
8= [tex]Vf = 16m/s[/tex]
[tex]Ft = m( Vf - Vi )[/tex]
[tex](40N)(8s) = (20kg)(Vf - 0m/s)[/tex]
[tex]320N.s = Vf(20kg)[/tex]
[tex]Vf =( 320N.s)/(20kg)[/tex]
[tex]Vf = 16m/s[/tex]
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Respuesta:
5= [tex]1224.48 kg[/tex]
[tex]4800J=m(9.8)x(0.4)4800=m(3.92)m=4800/3.92[/tex]
6=[tex]Vf=15.33 m/s[/tex]
[tex]Ei=(35kg) (9.8 m/s^{2} ) (12m)=4116 J[/tex]
[tex]Ei=Ef[/tex]
[tex]Ef= \frac{1}{2} mV\frac{2}{f}[/tex]
[tex]4116 J=\frac{1}{2} (35kg) V\frac{2}{f}[/tex]
[tex]Vf=15.33 m/s[/tex]
7= [tex]m = 0,005 kg[/tex]
[tex]Ec = 1/2 m[/tex]·[tex]v^{2}[/tex]
590 J = 1/2 m · (450 m/s)
590 J = 1/2 m · 202 500
590 · 2 = m · 202 500 /
1180 J = m · 202 500
m = 1180 J / 202 500 [tex]m^{2} / s^{2}[/tex]
8= [tex]Vf = 16m/s[/tex]
[tex]Ft = m( Vf - Vi )[/tex]
[tex](40N)(8s) = (20kg)(Vf - 0m/s)[/tex]
[tex]320N.s = Vf(20kg)[/tex]
[tex]Vf =( 320N.s)/(20kg)[/tex]
[tex]Vf = 16m/s[/tex]