The Effect Length Has on a Pendulum's Period
Prediction:
I predict that the shorter the length of string, the shorter the time it takes for the pendulum to complete one period. The longer the length of the string, the longer the time it will take to complete one period.
Equipment needed for experiment:
-Clamp
-Stopwatch
-Bob/Ball
-Metre ruler
-String
Obtaining the results:
I will be measuring the length of the string in 10s, so that I can obtain a wider range of results. I will then take 10 readings, and calculate the average time of osocilation for each length, making it a fair test. I also need to take into account what factors will affect this experiment.
…show more content…
This is what I predicted at the beginning of the experiment.
Evaluation:
I think the method I used was a good way of carrying out the investigation, as it was a fair test. The results were quite accurate, but could be more accurate by doing an average of more than five different sets of results. This could also be a fairer test by making sure the string the pendulum is attached to is exactly 90° (right-angle) from the clamp stand.
Doing background research into the pendulum I found that Galileo was the first to properly experiment on this work. He discovered that a pendulum with a length of string four feet long would have a period that would be twice as long as a pendulum with a string one foot long.
So if the pendulum had a string that was 40cms long, it would be twice as long as a pendulum with 10cms.
If the period for a pendulum of 40cms was 1.4, then the time of the period for the pendulum of 10cms should be
...rting the stopwatch itself. Alternatively, we could also exclude milliseconds when calculating out results. This would therefore eradicate any reaction times and as a result, make the data more reliable and accurate.
10. Then wrap the ponytail into a really tight bun and secure with a rubber band. (See Figure 1.9)
Have you ever watched a movie and been dissatisfied, because it was not similar to its book? There are multiple movies that seem as if they are their own story, for they don't resemble their book at all. For example, “The Pit and the Pendulum.” by Edgar Allen Poe. He, himself would not approve of the film that follows his story. For one thing, the storyline was no where near to being like his book. Another reasoning is that he wrote based of one man not multiple people. And finally, he wouldn’t of approved of the art on the walls in the room with the pit and pendulum. These are the reasonings of why Poe would not appreciate the film.
The first participant measured her pulse rate for 30 seconds before starting the exercise. Her pulse rate was calculated to determine the number of beats per minute. She then stepped on the platform (up and down) and continued at a slow pace for 3 minutes. After three minutes of the exercise, she measured her pulse rate every minute to determine her recovery time. This process was repeated until her pulse rate returned to normal.
Measure the length, width, and depth of one gummy bear on wax paper with the ruler.
every step by another 1 cm2. At the same time I will be counting the
Pull cable back to your side while pulling your shoulder back and pushing your chest slightly forward
Then take the ruler and put it on the end of the opisthocranion and measure the distance in cm,record your answer on the table
Factors Affecting the Time Period for Oscillations in a Mass-spring System. When a mass is attached to the end of a spring the downward force mass applied to the spring will cause the spring to extend. We know from Hooke's law that the force exerted by the masses attached to the spring will be proportional to the amount the spring extends. F = kx
Step 4:Make sure the person holds the clothespin between their thumb and index finger and squeeze until the two ends meet.
Pause the beep test on your laptop after level 1 finishes. 7) Get timer ready to time 5 seconds after the level and another timer to measure 30 seconds. 8. 5 seconds after the beep goes, the subjects must measure their heart rate by placing their index and middle fingers under their right lower jaw and finding their pulse (move your fingers around a little to find the clearest pulse possible). Once you have found your pulse, count how many times you feel your pulse for 30 seconds and multiply that answer by 2 to give you beats per minute.
middle of paper ... ... different from what it should be. To solve this problem a thermostatic water bath could be used as stated above. * If the stop watch was stopped to early or late, again the overall reading would not be as accurate as it could have been.
- Temperature was measured after and exact time i.e. 1 minute, 2 minutes, 3 minutes.
5. Add Hcl, as soon as it mixes with the ( ), start the stopwatch
We must also make sure that we add both the water and the sodium thiosulphate at exactly the same time (into the beaker with the hydrochloric acid in it), or it could affect the results of the experiment. We must start the stopwatch at the exact time as we put the water and the sodium thiosulphate into the beaker. To do this, it is a lot easier if there are two people doing the experiment, so one person can put the two substances in the HCL, and one person can start the stopwatch. Also, the person timing the experiment will look for the disappearance of the cross, otherwise there would be a time lapse between seeing the cross disappear and telling the other person to stop the clock and then eventually stopping the clock. It is also important to keep the temperature the same to obtain fair results, however we do not have to worry about this as the temperature will be kept at room temperature throughout the experiment.