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Electric problem
By:
Daban shwane.
30-12 -2013.
Walker Problem 13, pg. 641
Given that q = +12 C and d = 16 cm, (a) find the direction
and magnitude of the net electrostatic force exerted on
the point charge q2 in Figure 19-30. (b) How would your
answers to part (a) change if the distance d were
tripled?

30-12-2013

2
Solution

Draw free body for JUST q2


F 21

k

(12 C )

( 0 . 16 m )
in direction
101 N x


30-12-2013

24 C


F 23

2

from 1 to 2

Walker, Chapter 19

k

( 24 C )

36 C

( 0 . 16 m )
in direction
303 N x


2

from 3 to 2

3

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Electric problem

  • 2. Walker Problem 13, pg. 641 Given that q = +12 C and d = 16 cm, (a) find the direction and magnitude of the net electrostatic force exerted on the point charge q2 in Figure 19-30. (b) How would your answers to part (a) change if the distance d were tripled? 30-12-2013 2
  • 3. Solution Draw free body for JUST q2 F 21 k (12 C ) ( 0 . 16 m ) in direction 101 N x 30-12-2013 24 C F 23 2 from 1 to 2 Walker, Chapter 19 k ( 24 C ) 36 C ( 0 . 16 m ) in direction 303 N x 2 from 3 to 2 3