AP Physics 1 Quiz
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ENERGY AND MOMENTUM OF ROTATING SYSTEMS
Question 1
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A spinning platform has
L
i
=
10
kg
⋅
m
2
/
s
L_i=10\,\text{kg}\cdot\text{m}^2/\text{s}
L
i
=
10
kg
⋅
m
2
/
s
. A constant torque of
−
1.0
N
⋅
m
-1.0\,\text{N}\cdot\text{m}
−
1.0
N
⋅
m
acts for
6.0
s
6.0\,\text{s}
6.0
s
. What is
Δ
L
\Delta L
Δ
L
?
A
−
6.0
kg⋅m
2
/
s
-6.0\,\text{kg·m}^2/\text{s}
−
6.0
kg⋅m
2
/
s
B
−
1.0
kg⋅m
2
/
s
-1.0\,\text{kg·m}^2/\text{s}
−
1.0
kg⋅m
2
/
s
C
−
60
kg⋅m
2
/
s
-60\,\text{kg·m}^2/\text{s}
−
60
kg⋅m
2
/
s
D
6.0
kg⋅m
2
/
s
6.0\,\text{kg·m}^2/\text{s}
6.0
kg⋅m
2
/
s
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