2. The same rod in #lis bent to form a semicircle with a radius of R = 60.0 cm (see Fig. 2). The
charge per unit length of semicircle is $\lambda = \lambda_0 \cos \theta$, and the semicircle has a total charge of 12.0
$\mu$C. Calculate the total force on a charge of +2.0 $\mu$C placed at the center of curvature P.
y
$\theta$
R
P
Figure 2