# Procedure level the force table using the bubble

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Procedure:Level the force table using the bubble level and the screws. Adjust the pulleys on thetable according to the angles specified and add the needed weight to each hanger. Findthe magnitude and direction of the´Ethat keeps the ring centered.F =|´F|=mg. g is measured in Newtons (N) and equals 9.80 m/s2and m is themass in kilograms (kg) of the hanger.
Forces to be measured:´F1:200 g at 30.0o,´F2:200 g at 120.0o´F1:150 g at 30.0o,´F2:150 g at 120.0o,´F3:150 g at 180.0´F1:300 g at 30.0o,´F2:250 g at 120.0o,´F3:150 g at 180.0Record magnitudes and directions of resultantsDraw a vector diagram on graph paperCalculate the magnitude of the resultants using the Law of CosinesMeasurements and calculations:,oooo.
|´R| (N)Resultant forceθ´R|´E| (N)Balance forceθ´EMeasured result2.75 N77.0o2.75 N257.0oGraphical result2.84 N74.7o2.84 N254.5oAnalytical result2.77 N75.0o2.77 N255.0oTable 2: Results of Measurement #2:´F1:150 g at 30.0o,´F2:150 g at 120.0o,´F3:150 g at 180.0o|´R| (N)Resultant forceθ´R|´E| (N)Balance forceθ´EMeasured result2.16 N111.5o2.16 N291.5oGraphical result2.21 N113.6o2.21 N293.6oAnalytical result2.22 N114.9o2.22 N294.9oTable 3: Results of Measurement #3:´F1:300 g at 30.0o,´F2:250 g at 120.0o,´F3:150 g at 180.0o|´R| (N)Resultant forceθ´R|´E| (N)Balance forceθ´EMeasured result3.53 N92.5o3.53 N272.5o

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