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5-8. Coulomb Force in One Dimension

# 5-8. Coulomb Force in One Dimension - configuration[tsl7...

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Coulomb Force in One Dimension (1) Find net force on charge q 0 due to charges q 1 and q 2 . Consider x -component of force. F 0 = + k | q 1 q 0 | (3 . 5 m ) 2 - k | q 2 q 0 | (1 . 5 m ) 2 = +3 . 67 × 10 - 7 N - 7 . 99 × 10 - 7 N = - 4 . 32 × 10 - 7 N . Find net force on charge q 2 due to charges q 1 and q 0 . F 2 = - k | q 1 q 2 | (2 . 0 m ) 2 + k | q 2 q 0 | (1 . 5 m ) 2 = - 5 . 62 × 10 - 7 N + 7 . 99 × 10 - 7 N = +2 . 37 × 10 - 7 N . 8/1/2008 [tsl5 – 1/5]

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Coulomb Force in One Dimension (2) Three particles with charges of magnitude 1C are positioned on a straight line with two equal spacings. q q q 1 2 3 (a) Find the direction (left/right) of the net forces vector F 1 , vector F 2 , vector F 3 on each particle. (b) Which force is the strongest and which force is the weakest? 8/1/2008 [tsl6 – 2/5]
Coulomb Force in One Dimension (3) Four point charges equal magnitude are lined up in three different configurations. The Coulomb force between nearest neighbors is 4N. (a) (b) (c) Find direction and magnitude of the net force experienced by the green particle in each

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Unformatted text preview: configuration. 8/1/2008 [tsl7 – 3/5] Coulomb Force in One Dimension (4) Three charged particles are positioned along a straight line with two equal spacings . The net Coulomb force on charge q 3 happens to vanish. q = ? q =1 2 1 q = 2 3 F = 0 3 d d C μ C μ What is the value of q 1 ? 8/1/2008 [tsl8 – 4/5] Coulomb Force in One Dimension (5) How are the forces v F 1 and v F 2 in (a) affected by the changes made in (b) and (c)? q 2 q 1 q 1 q 2 q 1 q 2 1 2 = +1C = +1C = +1C = +2C 1m 1m = +1C = +2C F F (c) (b) (a) What changes if the charge q 2 is made negative? 8/1/2008 [tsl347 – 5/5]...
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