Newton's Second Law in Rotational Form
AP Physics 1 · Flashcards
AP PHYSICS 1 · FLASHCARDS
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QUESTION
What is the effect on torque if force is applied perpendicular to lever arm?
QUESTION
What happens to torque if the angle
θ
\theta
θ
changes from
90
∘
90^\circ
9
0
∘
to
0
∘
0^\circ
0
∘
?
QUESTION
Calculate torque given
F
=
10
N
F = 10N
F
=
10
N
,
r
=
2
m
r = 2m
r
=
2
m
, and
θ
=
90
∘
\theta = 90^\circ
θ
=
9
0
∘
.
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ANSWER
Torque = 20 Nm. Using
τ
=
r
F
sin
θ
=
(
2
)
(
10
)
(
1
)
=
20
\tau = rF\sin\theta = (2)(10)(1) = 20
τ
=
r
F
sin
θ
=
(
2
)
(
10
)
(
1
)
=
20
Nm.
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