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Card # 12 m (g) 150g ? (degrees) m (g) ?2 (degrees) FRots (N) ?3 (degrees) 270° 220g 59° 180g 43° Part 1: Finding the Equilibrant of Two Known Forces Activity 1A: Graphical Method: ?Draw two vectors representing two known forces $F_1$ and $F_2$ using the graph paper on the next page. Each should begin at the origin of an x-y axis and labeled as $F_1$ and $F_2$ respectively. ? Find the resultant force $\vec{F} = \vec{F_1} + \vec{F_2}$. ? Measure the magnitude and the angle of the resultant force with the protractor and the ruler and record these values in Table 2. ?Determine the magnitude and the angle of the equilibrant force, $F_{rgraph}$ needed to balance the resultant force $\vec{F}$ due to two forces, $F_1$ and $F_2$, and write down these values in Table 2. ?Add the $F_r$ vector to your diagram to represent the equilibrant force. UIC Physics Department 0.1N ? 0.5cm $F_1$=1.5N ? 7.5cm $F_2$= 2.2N ? 11cm 19 to kg Table 2 Force Magnitude = Mass x g (N) ? (degrees) Force 1, $F_1$ 1.5N 270° Force 2, $F_2$ 2.2N 59° Resultant, $\vec{F}$ BN Equilibrant, $F_{rgraph}$ Vector Addition (Force Table) Page 1 of 8 Physics 141 Laboratory R 59° 6.5cm $6.5cm \over 0.5cm$ = 13N

          Card #
12
m (g)
150g
? (degrees) m (g) ?2 (degrees) FRots (N) ?3 (degrees)
270°
220g
59°
180g
43°
Part 1: Finding the Equilibrant of Two Known Forces
Activity 1A: Graphical Method:
?Draw two vectors representing two known forces $F_1$ and $F_2$ using the graph paper on the next page. Each
should begin at the origin of an x-y axis and labeled as $F_1$ and $F_2$ respectively.
? Find the resultant force $\vec{F} = \vec{F_1} + \vec{F_2}$.
? Measure the magnitude and the
angle of the resultant force with the
protractor and the ruler and record
these values in Table 2.
?Determine the magnitude and the
angle of the equilibrant force, $F_{rgraph}$
needed to balance the resultant force
$\vec{F}$ due to two forces, $F_1$ and $F_2$, and write down these values in Table 2.
?Add the $F_r$ vector to your diagram to represent the equilibrant force.
UIC Physics Department
0.1N ? 0.5cm
$F_1$=1.5N ? 7.5cm
$F_2$= 2.2N ? 11cm
19 to kg
Table 2
Force
Magnitude = Mass x g
(N)
?
(degrees)
Force 1, $F_1$
1.5N
270°
Force 2, $F_2$
2.2N
59°
Resultant, $\vec{F}$
BN
Equilibrant, $F_{rgraph}$
Vector Addition (Force Table)
Page 1 of 8
Physics 141
Laboratory R
59°
6.5cm
$6.5cm \over 0.5cm$ = 13N

Card #
12
m (g)
150g
? (degrees) m (g) ?2 (degrees) FRots (N) ?3 (degrees)
270°
220g
59°
180g
43°
Part 1: Finding the Equilibrant of Two Known Forces
Activity 1A: Graphical Method:
?Draw two vectors representing two known forces F1 and F2 using the graph paper on the next page. Each
should begin at the origin of an x-y axis and labeled as F1 and F2 respectively.
? Find the resultant force F⃗ = F⃗1⃗ + F⃗2⃗.
? Measure the magnitude and the
angle of the resultant force with the
protractor and the ruler and record
these values in Table 2.
?Determine the magnitude and the
angle of the equilibrant force, Frgraph
needed to balance the resultant force
F⃗ due to two forces, F1 and F2, and write down these values in Table 2.
?Add the Fr vector to your diagram to represent the equilibrant force.
UIC Physics Department
0.1N ? 0.5cm
F1=1.5N ? 7.5cm
F2= 2.2N ? 11cm
19 to kg
Table 2
Force
Magnitude = Mass x g
(N)
?
(degrees)
Force 1, F1
1.5N
270°
Force 2, F2
2.2N
59°
Resultant, F⃗
BN
Equilibrant, Frgraph
Vector Addition (Force Table)
Page 1 of 8
Physics 141
Laboratory R
59°
6.5cm
6.5cm 0.5cm = 13N

Added by Lori D.

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