E101 Physics Essay

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PAGARA, Krishna Faith A. faithpagara@yahoo.com E101: RESOLUTION OF FORCES METHODOLOGY In this experiment, we determined the resultant force using Graphical method and Analytical method. For the first part, we used a force table to determine the resultant force. We first set up the force table by putting the supper pulley with clamp and the mass hanger. We set the super pulley in the angles 0°, 90°, 180° ,270°. Afterwards, we placed different mass respectively into the mass hangers. Then we adjust the strings so that the ring will be at the center. Figure 1 – Set up After that, we slightly pulled the string to check if the ring will be back at the center again. When it returned, we can now record the mass on each ring and its angle. Figure 2 – Force Table In determining the F1, F2 and F3, we used Polygon method and Component method. After computing, we then compared F4 to the results. DATA AND RESULTS Actual Values | Trial 1 | Trial 2 | F1 | 100 g | 150 g | F2 | 75 g | 50 g | F3 | 150 g | 175 g | F4 | 100 g | 200 g | Θ1 | 70° | 65° | Θ2 | 138° | 93° | Θ3 | 238° | 189° | Θ4 | 348° | 305° | Trial 1 Actual R = F4 = g | Actual Θ = | | Computed Value | Polygon Method | %Error ( polygon ) | Component Method | %Error(component) | R | 100 g | 0% | 102.44g | 2.38 % | Θ | 438 ° | 0% | 350.48° | 0.71 % | | Trial 2 Actual R = F4 = g | Actual Θ = | | Computed Value | Polygon Method | %Error ( polygon ) | Component Method | %Error(component) | R | 200 g | 0% | 194.14g | 3.09 % | Θ | 305

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