fisica1-youn-e-freedman-exercicios-resolvidos

1.34:
r
o
o
1.35: A ; A x
= ( 12.0 m) sin 37.0 = 7.2 m, A y
= ( 12.0 m) cos 37.0 = 9.6 m.
r
o
o
B;
Bx
= ( 15.0 m) cos 40.0 = 11.5 m, By
= −( 15.0 m)
sin 40.0 = −9.6 m.
r
o
o
C;
C = −( 6.0 m) cos 60.0 = −3.0 m, C = −( 6.0 m) sin 60.0 = −5.2
m.
x
y
Ay
−1.00 m
1.36: (a) tan θ = = = −0.
500
A 2.00 m
X
(b)
( c)
(d)
θ = tan
θ = tan
−1
θ = tan
( − 0.500)
A
tan θ =
A
θ = tan
A
tan θ =
A
−1
( − 0.500)
−1
y
x
A
tan θ =
A
y
y
x
x
−1
=
=
= 360
( 0.500)
= 180
o
1.00 m
2.00 m
1.00 m
− 2.00 m
= 26.6
o
− 26.6
−1.00 m
= = 0.500
− 2.00 m
o o o
( 0.500) = 180 + 26.6 = 207
o
− 26.6
o
= 0.500
= −0.500
o
= 333
= 153
o
o