ipl-logo

Stopwatch Experiment Report

1017 Words5 Pages

Improvements
Improvements can be done to minimize the effect of errors so that the experiment results will be more precise and accurate in the future.
Random Errors
In order to reduce random errors which is caused by reaction time when taking stopwatch reading we will be more careful in planning of experiment. Instead of letting only one people to count and take the reading of the revolution of the rubber stopper at the same time, two people will be assigned for it so that the reading will become more accurate. This will help people in charge to count the number of revolutions to concentrate fully on the revolution while people who is controlling the stopwatch can concentrate fully when to start and stop the stopwatch. This can prevent from …show more content…

We need to increase the number of revolutions from 10 times to 20 times so that we will gain a consistent result .Consistency in experiment is important to obtain a precise outcome.

Systematic Errors
There are a few suggestions that can be taken to improve the systematic errors.
As to overcome the instrument fault such as zero error in ruler, it is suggested to use a new meter ruler. New meter ruler has high accuracy and the scale is clear enough so that people can take the reading easily.
Next, it is preferred to use unstrectchable nylon string so that the radius will remain constant during the experiment. It is very crucial to maintain a constant radius in this experiment as it acts as fixed variable, supposed to be at the same length throughout the experiment.
Use glass tube rather than plastic tube to reduce the effect of friction in experiment. Glass tube has smoother surface area than plastic tube so that it can overcome frictional force.
Another step is to prevent the plastic tube from being sliding up and sliding down in the experiment , we must ensure that the person holding the pipe has a strong and good grip on it as to maintain its position on the …show more content…

Photogate sensor is capable in measuring a very accurate speed so we can fix the speed of the rotation by using photogate sensor in our experiment. The sensor has an infrared LED emitter on one arm and a photo transistor on the other arm. As the mass passes the photogate sensor , it will block the infrared beam that is exist between the infrared LED emitter and photogate sensor. The timing of beam blocking will determine the speed of the rotation. It operates based on Pendulum-Timing process where the timing begins when the photogate is first interrupted and the timing continues until it is interrupted for the second time which will result in the period of rotation. This device is very important as our experiment require a constant speed. When photogate sensor is available we can compare the speed of rotation whether it is constant or fluctuating throughout the experiment. Hence , we can decide whether to use or not to use data gained. If the speed is constant , then the data can be

Show More
Related
631 Words | 3 Pages

In this lab there were five different stations. For the first station we had to determine an unknown mass and the percent difference. To find the unknown mass we set up the equation Fleft*dleft = Fright*dright. We then substituted in the values (26.05 N * 41cm = 34cm * x N) and solved for Fright to get (320.5g). To determine the percent difference we used the formula Abs[((Value 1 - Value 2) / average of 1 & 2) * 100], substituted the values (Abs[((320.5 - 315.8) /

Read More
956 Words | 4 Pages

Before proceeding to our experiment, we made sure the voltage knob in the power supply is set to 0. Then, the sensor was inserted in the canter of the Helmholtz coil through the hole in the radius. To calibrate the sensor to 0, we clicked “start” in the window

Read More
1294 Words | 6 Pages

Modifications of this procedure include the use of hot plates instead of Bunsen burners, and heating t-butyl alcohol to 60-65 ℃ instead of 50 ℃. Other modifications include the use of weighing boats to measure an amount of unknown instead of weighing paper, and completing one run of unknown 2 instead of two runs of unknown 2. Summary of

Read More
1651 Words | 7 Pages

Career Episode One Introduction C.E 1.1 I completed this collective project in the optoelectronic information laboratory of University of Shanghai for Science and Technology from July to October 2011 when learning the photoelectric detection technology. As the team leader, I completed the project design, team organization, actual operation and other core work. Background C.E 1.2 Upon completion of the basic course research in the freshman and sophomore year, my teacher Ling Chen believed that he should enhanced our practical ability, so he provided us with the topic of the research on lubricating oil film thickness precision detection technology of the sliding bearing based on the principle of the optical fiber displacement sensor. Our research object was water film thickness detection.

Read More
636 Words | 3 Pages

Intro Galaxies have a variety of shapes that ranges from ellipsoids to spiral galaxies. Spiral galaxies are made up of many individual stars. Moreover, the components of the spiral galaxies move relative to each other. For instance, a rotation curve of a rigid body measures the speed and the radius.

Read More
799 Words | 4 Pages

Another variable is how durable the clothespin is. If the clothespin is deformed before or during the experiment, it can affect how many times the clothespin is squeezed because it is not working correctly. Lastly, one more variable is the motivation and wanting to participate to squeeze the clothespin as many times as possible. If the person has more motivation, it is most likely the person will squeeze the clothespin more

Read More
209 Words | 1 Pages

An experimenter cleaned out the rotometer and placed the cylindrical glass barrier directly over the intersections

Read More
1572 Words | 7 Pages

This was done to get more accurate results. The first time the experiment was conducted it was tested at three different time points, at zero minutes, fifteen minutes and

Read More
2045 Words | 9 Pages

All the experiment was depending on fortune and luck and can not be successful at all because the performers do not have proper direction to perform the experiment. For the experiment, workers should have proper equipment, standardise and should have power to do work their own way. It is also concluded that the quality of production might be great in future by use the present statics and create a quality control chart and solve the problem in specific problems which effects the project. The common wisdom is that if only people did not make so many mistakes, there would not be so many problems. But even with the variation contributed by the people reduced to zero, there are still too many red

Read More
713 Words | 3 Pages

The time it took for each of the trials was a recorded and then based on that along with the radii measurements the calculations for the centripetal force were conducted. The purpose of this experiment was to measure the period of a swinging stopper for three selected radii in order to calculate the centripetal

Read More
642 Words | 3 Pages

We obtain an average of 0.45 (min) after using equation (2), T¬ave¬ = ∑ Ti/N = ∑((0.56+0.39+0.40))/3 = 0.45 (min). From the results, we quickly learn that the proposed time for the first attempt, the “best method” is completely off to the actual results as our second attempt has a much better success rate than the first. Nonetheless, a strong indication for the relatively small difference in time between attempts is due partly to human error. The proposed time for our “best method” is 0.45 (min) as the fastest time for one person to complete the task is 1.20 (min).

Read More
780 Words | 4 Pages

Place the the beaker onto a hot plate that is on a low heat setting (about setting 3). Every 5 minutes for 20 minutes, measure the circumference of the balloon and record it in Data Table A. You can measure the circumference of the balloon by looping a piece of string around it then using a ruler to measure the string’s length. Record the data in the data

Read More
551 Words | 3 Pages

The spacecraft initially measured

Read More
666 Words | 3 Pages

The tuning fork was struck on the rubber stopper and was held above the water column. The tube’s length was adjusted until the volume of the sound increased and measured the length of

Read More
1346 Words | 6 Pages

This experiment has to be carried out carefully

Read More

More about Stopwatch Experiment Report

Related Topics

Open Document