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How does the weight of a pendulum effect its oscillation time.

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Introduction

How does the weight of a pendulum effect its oscillation time Plan The key factors that could affect this experiment are that the length of pendulum varying will change how far it has to swing to complete an oscillation. The weight of the pendulum will have a effect on the oscillation time because the pendulum will have more weights which will increase the surface area for air resistance to take place this is the only possible way the weight of the pendulum will affect the oscillation time because, gravity is a standard force, so the weight will not effect the amount of gravity taking place. The angle at which it is dropped at is another key factor because, if it is dropped from higher up it has longer to pick up speed so therefore it shall travel higher up giving it a longer oscillation time. If the pendulum is dropped from a lower then it shall have less time to pick up speed and so will not travel as high up on the other side. ...read more.

Middle

We shall release the pendulum rather than push it because; it is easier to make the pendulum start with the same amount of force throughout the experiment. Results Weight Of Pendulum Length of time for 5 oscillations (secs) 100g 8.25 8.06 8.19 200g 8.35 8.50 8.53 300g 8.87 8.94 8.84 400g 8.91 8.88 8.59 500g 8.72 8.91 8.34 600g 9.41 9.50 9.47 700g 9.44 9.41 9.44 800g 9.43 9.44 9.59 900g 9.60 9.51 9.38 1000g 9.37 9.41 9.46 Weight Of Pendulum Average length of time for 5 oscillations (secs) 100g 8.2 200g 8.5 300g 8.9 400g 8.8 500g 8.7 600g 9.5 700g 9.4 800g 9.5 900g 9.5 1000g 9.4 Analysis My results show that an increase in weight on the pendulum the longer it takes for the pendulum to complete 5 oscillations, and my line of best fit on my graph shows a gradually increase from 8 seconds to complete 5 oscillation to 9.5 seconds to complete 5 oscillations. The reason they are close is because gravity is a standard force and is not affected by surface area or weight. ...read more.

Conclusion

We could have improved our test by having a beam and when it is broke by the pendulum the fifth time the pendulum breaks the beam it could stop timing so it would be the same reaction time for all, we could have had a stand or something to hold the pendulum in place before it is dropped that way we could be sure it was from the same spot each time. In our experiment there was some slightly out of place results in our experiment but they're no severe ones that could be anomalous results. We could have investigated a further 1000g so we went to 2000g to see if after every 500g there was a jump in time of nearly a second our so, like there was in our experiment. We could also continue to the point of were we have added so much weight that it could not complete 5 oscillations to the same height as it started. We could also have tried the experiment at different temperatures to see what effect, if any it had on the oscillation times. Liam Kelly ...read more.

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