Measurement of Force Between Two Parallel

Measurement of Force Between Two Parallel - PHYSICS 211L...

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PHYSICS 211L Measurement of Force Between Two Parallel, Current-Carrying Conductors Date: _03/05/2007 _. NAMES:_Sarah Karam and Toni Kondakji __ . SECTION: _1 _. INSTRUCTOR: _Ms. Sara Najm _. Measurement I. Set the equilibrium separation between the axes of the rods to about 4 mm. Table 1 Mass (mg) (y) i (A) i average (A) i 2 average (x) x 2 e=y-αx e 2 50 6.77 6.73 6.75 45.56 2075.7 5.58 × 10 -6 3.11 × 10 -11 100 9.8 9.63 9.72 94.38 8907.5 7.97 × 10 -6 6.35 × 10 -11 150 12.16 12.09 12.13 147.13 21614.9 6.54 × 10 -6 4.27 × 10 -11 200 13.95 14.01 13.98 195.44 38196.8 9.45 × 10 -6 8.92 × 10 -11 250 16.19 16.13 16.16 261.15 68199.3 -4.62 × 10 -6 2.13 × 10 -11 300 18.25 18.29 18.27 333.79 111417.7 -2.54 × 10 -5 6.47 × 10 -10 1.05×10 -3 Totals, Σ 77.01 1077.34 250412 XXXXXX 8.948 × 10 -6 Plot the mass, m, versus the square of the current, i 2 . Determine the slope of the line (α) and the error of the slope. Remember! For best fit, with β=0: = i i x y α , - = 2 2 2 i e N N σ where 2 2 ) ( - = i i x x N 2 2 ) ( - = i i x x N = 6 (250412) – (1077.34) 2 = 341810.524 3 7 2 1.05 10 9.74 10 / 1077.34 i i y Kg A x - - × = = = × ( 29 2 10 2 15 8 6 (8.948 10 ) 3.927 10 2 4 341810.524 6.26 10 i e N N - - - × = = = × - = × Therefore, ( 29 8 2 97.4 6.2 10 / Kg A - = ± × 1 Grade:
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Chart Title y = 9E-07x + 2E-05 0 0.0001 0.0002 0.0003 0.0004 0 100 200 300 400 Square of Intensity (A^2) Mass (Kg) 2
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Measurements of the “geometrical parameters” of the set-up: Radii of the bars: R 1 = _1± 0.05 mm
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Measurement of Force Between Two Parallel - PHYSICS 211L...

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