Question

1a) Three point charges are located at the corners of an equilateral triangle (see figure below). Given that $q = 8 \mu C$ and $d =$ 30 cm, calculate the magnitude $F_{21}$ of the electrostatic force exerted by point charge $Q_2$ on point charge $Q_1$ in the figure. $Q_1 = +q$ d 60° d $Q_2 = +2q$ d $Q_3 = -q$ 1b) Draw a free-body diagram for the point charge $Q_1$, indicating the relative scale of each contributing force. Determine (using graphical vector addition) the direction of the net force on point charge $Q_1$, due to the other two charges present. Note: $Q_2 = +2q$, $Q_3 = -q$ $Q_1 = +q$ d 60° d $Q_2 = +2q$ d $Q_3 = -q$ 1c) Calculate the magnitude of the net force on point charge $Q_1$. Use your result from part a) rounded to 3 significant figures. $Q_1 = +q$ d 60° d $Q_2 = +2q$ d $Q_3 = -q$

          1a)
Three point charges are located at the
corners of an equilateral triangle (see
figure below). Given that $q = 8 \mu C$ and $d =$
30 cm, calculate the magnitude $F_{21}$ of
the electrostatic force exerted by point
charge $Q_2$ on point charge $Q_1$ in the
figure.
$Q_1 = +q$
d
60°
d
$Q_2 = +2q$
d
$Q_3 = -q$
1b)
Draw a free-body diagram for the point charge $Q_1$, indicating the relative scale of each
contributing force. Determine (using graphical vector addition) the direction of the net force
on point charge $Q_1$, due to the other two charges present. Note: $Q_2 = +2q$, $Q_3 = -q$
$Q_1 = +q$
d
60°
d
$Q_2 = +2q$
d
$Q_3 = -q$
1c)
Calculate the magnitude of the net force on point charge $Q_1$.
Use your result from part a) rounded to 3 significant figures.
$Q_1 = +q$
d
60°
d
$Q_2 = +2q$
d
$Q_3 = -q$

1a)
Three point charges are located at the
corners of an equilateral triangle (see
figure below). Given that q = 8 μ C and d =
30 cm, calculate the magnitude F21 of
the electrostatic force exerted by point
charge Q2 on point charge Q1 in the
figure.
Q1 = +q
d
60°
d
Q2 = +2q
d
Q3 = -q
1b)
Draw a free-body diagram for the point charge Q1, indicating the relative scale of each
contributing force. Determine (using graphical vector addition) the direction of the net force
on point charge Q1, due to the other two charges present. Note: Q2 = +2q, Q3 = -q
Q1 = +q
d
60°
d
Q2 = +2q
d
Q3 = -q
1c)
Calculate the magnitude of the net force on point charge Q1.
Use your result from part a) rounded to 3 significant figures.
Q1 = +q
d
60°
d
Q2 = +2q
d
Q3 = -q

Added by Kyle J.

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