4 – Leis de Newton do Movimento · SMF © 2006- 2008, Simple Machines LLC . SMF © 2006- 2008,...
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4 – Leis de Newton do Movimento
Transcript of 4 – Leis de Newton do Movimento · SMF © 2006- 2008, Simple Machines LLC . SMF © 2006- 2008,...
4 – Leis de Newton do Movimento
©2002 by John Wiley & Sons
©2002 by John Wiley & Sons
©2002 by John Wiley & Sons
©2002 by John Wiley & Sons
©2002 by John Wiley & Sons
1 2= +F F F
x y= +F F F©2004 by Pearson Education
1 2= +R F F
©2004 by Pearson Education
©2004 by Pearson Education
©2004 by Pearson Education
x yF F= +F i j©2004 by Pearson Education
0=∑F
∝∑a F
©2004 by Pearson Education
1m
∝a
©2004 by Pearson Education
m=∑F a
m=∑F a
x x
y y
z z
F ma
F ma
F ma
=
=
=
∑∑∑
x
y
z
m=P g
©2004 by Pearson Education
12 21= −F F
B/A A/B= −F F
©2004 by Pearson Education
©2004 by Pearson Education
©2002 by John Wiley & Sons
©2004 by Pearson Education
©2004 by Pearson Education
©2004 by Pearson Education
1 T=T j
2 T=T j
1 1m g= −P j
2 2m g= −P j
1 a=a j
2 a= −a j
m1
P1
P2
T1
T2
m2
x
y
o
m1
P1
P2
T1
T2
m2
x
y
o
1 2= −a a
1 1 1m=∑F a
1 1 1 1m+ =P T a
1 1 1m g T m a− + =j j j
1 1 1 (1)T m a m g= +
2 2 2m=∑F a
2 2 2 2 2 1m m+ = = −P T a a
2 2 1m g T m a− + = −j j j
2 1 2 (2)T m a m g= − +
2 11
1 2
m ma gm m
−=
+
2 11
1 2
m m gm m
−=
+a j
2 12
1 2
m m gm m
−= −
+a j
m1
P1
P2
T1
T2
m2
x
y
o
m1
P1
P2
T1
T2
m2
x
y
o
1 2= −a a
2 11
1 2
m m gm m
−=
+a j
2 12
1 2
m m gm m
−= −
+a j
m1
P1
P2
T1
T2
m2
x
y
o
m1
P1
P2
T1
T2
m2
x
y
o
1 T=T i 2 T=T j
1 1m g= −P j 2 2m g= −P j
1 a=a i 2 a= −a j
1 mg=N jm1
P2
T1
T2
m2
x
y
o
P1
N1
1 2a a= −
1 1 1m=∑F a
1 1 1 1 1m+ + =P N T a
1 1 1 1m g m g T m a− + + =j j i i
1 1 (1)T m a=
2 2 2m=∑F a
2 2 2 2m+ =P T a
( )2 2 2 2 1m g T m a m a− + = = −j j j j
2 2 (2)T m a m g= − +
21
1 2
ma gm m
=+
21
1 2
m gm m
=+
a i
22
1 2
m gm m
= −+
a j
m1
P2
T1
T2
m2
x
y
o
P1
N1
1 2a a= −
21
1 2
m gm m
=+
a i
22
1 2
m gm m
= −+
a j
m1
P2
T1
T2
m2
x
y
o
P1
N1
