Resistive Forces
AP Physics C Mechanics · Flashcards
AP PHYSICS C MECHANICS · FLASHCARDS
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QUESTION
Calculate the frictional force with
μ
=
0.3
\text{μ} = 0.3
μ
=
0.3
and
N
=
50
N
N = 50 \text{ N}
N
=
50
N
.
QUESTION
Identify the resistive force acting on an object moving through a fluid.
QUESTION
Find the resistive force on an object with
v
=
3
m/s
v = 3 \text{ m/s}
v
=
3
m/s
and
b
=
0.1
b = 0.1
b
=
0.1
in high-speed.
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ANSWER
F
drag
=
−
0.9
N
F_{\text{drag}} = -0.9 \text{ N}
F
drag
=
−
0.9
N
. Using
F
=
−
b
v
2
=
−
0.1
×
3
2
=
−
0.9
F = -bv^2 = -0.1 \times 3^2 = -0.9
F
=
−
b
v
2
=
−
0.1
×
3
2
=
−
0.9
N.
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