Ib Physics Ia - 2482 Words

IB Physics Internal Assessment Andy Tang Research Question In this internal assessment, I am given a cantilever to find the physical properties of it. I decide to investigate the relationship between the force I act on one side of the cantilever and the maximum acceleration the tail can reach. This experiment will be also showing the elasticity of the cantilever. Since I pull down one side of it and fixed the other side, when I cut the string, it will bounce up and down until all the internal energy is depleted. Text books Newton meter Accelerometer Equilibrium line Materials 1) A piece of cantilever that is made by acrylic plastic (length:35.2cm ±0.1; Width:4.0cm ±0.1; thickness:0.2cm ±0.1) 2) An accelerometer (sensor;†¦show more content†¦By considering the formula: Ep=kx2/2, when x (the displacement caused by deformation) cannot be changed any more, the potential energy will not be changing. When there is no more energy added into the system, the acceleration will not change. Raw Data Table Force (N ±0.05) | Acceleration (ms^-2)( ±0.2) | | Trial 1 | Trial 2 | Trial 3 | | max | min | max | min | max | min | 0.75 | 22.3 | -18.5 | 21.2 | -15.3 | 25.7 | -26.1 | 1.00 | 40.6 | -36.3 | 36.9 | -42.5 | 35.6 | -35.2 | 1.25 | 48.7 | -43.4 | 46.6 | -37.2 | 40.7 | -39.3 | 1.50 | 52.7 | -55.6 | 52.0 | -41.7 | 49.1 | -45.9 | 1.75 | 55.3 | -52.7 | 57.3 | -53.0 | 50.2 | -48.3 | 2.00 | 64.7 | -57.5 | 66.8 | -55.0 | 65.6 | -56.1 | 2.25 | 69.8 | -59.7 | 67.3 | -61.2 | 65.3 | -63.2 | 2.50 | 78.0 | -63.8 | 68.0 | -63.8 | 64.3 | -62.8 | 2.75 | 74.7 | -63.8 | 83.8 | -63.8 | 83.7 | -63.2 | 3.00 | 83.8 | -63.8 | 83.1 | -63.8 | 83.6 | -63.8 | Force uncertainty: The least count of the Newton meter that I used is 0.25N. Although the interspace of each scale is wide enough for me to determine, I was not able to control the tension force which I act on the Newton meter. This created the uncertainty of the force measurement. By noticing the fluctuation of the indicator, I estimate the uncertainty of the force is about 0.05N. Acceleration uncertainty: The data of the acceleration wereShow MoreRelatedIb Physics Ia-Freefall Essay749 Words   |  3 PagesAIM To find the acceleration of an object when falling down from a height in the presence of earth’s gravitational field, which is also known as free fall. Air resistance is neglected in this experiment. THEORY As an object is released from a height from the ground under the influence of the Earth’s gravitational force, the object will always fall under a constant rate of acceleration. Unlike in space, where object will just float around after being released, object falling on Earth will alwaysRead MoreIb Physics Ia - Domino Effect1271 Words   |  6 PagesChee Yong Hui 6.5 Domino Effect IA Investigate the effect of the distance between each domino on the time taken for all the dominoes to fall Independent Variable: Distance, d/cm, between each domino. 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