Physics-Mass on an inclined plane
...lts; Weight W/g Average θo 120 10 260 20 530 40 As you can see, when the angle is double, the weight is also roughly doubled. So we can conclude that: The weight needed to move the trolley is proportional to the angle of the ramp Evaluation: The results seem to be fairly reliable as the margin of error was fairly small (0.126Kg) and form a very strong correlation on the graph and a line of best fit can be easily drawn. This means that all the results taken correspond to one another well, and so we have fairly reliable results. There is, though, a margin of error, and so there were areas and sources of uncertainty in the experiment. Inaccuracy of measurements such as the angle of the plane occurred often, and the mass of the weights may have also been taken to an insufficient degree of accuracy. The procedure had its faults: the plane had notches to select the degree of elevation, not only did this limit the amount of different elevations that could be measured but also meant that selecting elevations would be inaccurate. Various improvements could be taken into account to impro...