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1
What is the angular velocity
ϖ
of the minute
hand of a clock?
ϖ
(in rad/s) = ?
A.
1 / 60
B.
2
π
/ 60
C.
1 / 3600
D.
2
π
/ 3600
A
F
3
=40 N
F
1
=100 N
F
2
=100 N
F
4
=150 N
30
°
Which force exerts the largest magnitude torque about the
point A?
A.
F1
B.
F2
C.
F3
D.
F4
E.
F1
and
F2
What is the
net torque
exerted by the 4 forces about the point A?
Assume
counterclockwise
torques are
positive
.
A
F
3
=40 N
F
1
=100 N
F
2
=100 N
F
4
=150 N
30
°
A.
80 N m
B.
100 N m
C.
180 N m
D.
200 N m
E.
None of the above
1m
1m
1m
1m
A.
60 N m
B.
 60 N m
C.
140 N m
D.
 140 N m
E.
None of the above
What is the
net torque
exerted by the 4 forces about the point
B
?
Assume
counterclockwise
torques are
positive
.
B
F
3
=40 N
F
1
=100 N
F
2
=100 N
F
4
=150 N
30
°
1m
1m
1m
1m
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F
1
L
2
L
1
F
2
pivot
For rotational equilibrium,
F
2
/F
1
= ?
A.
1
B.
1
C.
L
1
/L
2
D.
L
2
/L
1
For rotational equilibrium,
F
2
/F
1
= ?
A.
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 '07
 LIEPE, M
 Physics, Force

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