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Physics Lab Write-up #8

# Physics Lab Write-up #8 - 5 The 100 g mass was placed at...

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Equilibrium and Pulleys: Spring Scale Readings Based on Position of Various Masses June 22, 2009 Purpose In this experiment, students will observe the connection between equilibrium and forces. Hypothesis The readings of a spring scale will differ based on the position of various masses, but  adding them together will make them always equal to the opposing force. Materials -balance or measuring scale -two spring scales -meter stick -100 g mass -water supply and sink Procedure 1) The mass of the meter stick was found using a scale or balance. 2) The mass of the meter stick was found hung from the end. 3) The meter stick was attached to two spring scales, one at each end, and the mass  was measured. 4) The meter stick was placed at the 50 cm mark with a 100 g mass at the center of  the stick, and the mass was measured.
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Unformatted text preview: 5) The 100 g mass was placed at the 30 cm mark and the readings on the spring scales were observed. Test 1) The mass of the meter stick was 142.5 g. the weight of the meter stick was 1396500 N. 2) When a meter stick was hung from the end of the spring scale, it read 166 g. The net force was zero. 3) When the meter stick was attached to two spring scales, it read about 88 g on each. The net force was zero. 4) When a 100 g mass was placed at the center of the stick, the scale read 121 g. The net force was zero. 5) The readings on the spring scales changed to 165 g on the left and 127 g on the right when the 100 g mass was placed at the 30 cm mark rather than the center. The net force was zero....
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