Experimental Analysis Of The Periodic Motion On The Pendulum

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Experimental Analysis: What is periodic motion? Periodic motion is when the pendulum repeats its movement for a period of time. The gravitational acceleration on Mars is 3.71 m/s2. If the pendulums were set in motion on the red planet, how would that affect their periods? The periods would increase. Was it necessary to displace the pendulums by the same degrees? Why or why not? It was necessary to displace the pendulums by the same degrees because they had different measurements. In a lab, you may only have one independent variable. Would changing the mass on the pendulum effect the period? (Hint: look at the formula for T) Changing the mass, (M) would affect the definitive answer because it is a variable in the formula for T. How …show more content…

(Hint: one’s the only force on a projectile and the other keeps things taut) The only two forces acting on the pendulum bob are gravitational and tension. Where is the kinetic energy greatest and where is the kinetic energy least? Kinetic energy is the greatest at its maximum displacement and kinetic energy is at its least at the peak. Where is the potential energy greatest and where is the potential energy least? Potential energy is the greatest at the peak and potential energy is at its least at its maximum displacement. When the potential energy is at a maximum, what is the kinetic energy? When potential energy is at a maximum, its kinetic energy is zero. How does the period of the energy graphs compare to the period of the displacement graph? How does the frequency compare? The period of the energy graphs is different to the period of the displacement graph. What is the general shape of the graphs? (Hint: Think trig) The general shape of the graphs are triangles. Imagine you have a pendulum of length 0.200 m that is displaced 38.0° from equilibrium. It is released from some height with no added velocity. What is the velocity of the bob at the equilibrium position? (Hint: steps to solve …show more content…

If percent error was under 10%, discuss steps you took to eliminate as much error as possible. Finally, write a sentence or 2 about improvements to lab design. Propose at least one way to make the experimental values equal to the theoretical values (how to eliminate flaws in the experimental design) ALWAYS, ALWAYS USE 3rd PERSON PASSIVE IN A LAB REPORT (if you can remember this in college, you’re ahead of the curve) The purpose of this lab was to find the potential and kinetic energy of the pendulum. The objective is to establish the relationship between pendulum length and periodicity. Also, to compare with experimental values. If the length of the bob increased, the period would be longer. The motion of the pendulum was analyzed using video tracking software. This helped by tracking the displacement vs. time and kinetic energy of the pendulum for each variable. The graph shows that kinetic energy is greatest when the pendulum is at the maximum of displacement for the origin point. Some errors in this lab were the inaccuracy of the measurements of the angles of the pendulum used. It was measured by the eye instead of by an actual

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