Strength
All the data obtained from this experiment is plotted on the graph. The accuracy and precision can be determined from the graph. Based on the graph , as the line do not pass the origin , it can be deducted that the result is fairly accurate. Since there are few outliers on the graph , the precision of this graph is moderate. Accuracy of the graph is affected by systematic errors while the precision is affected by random errors.
A few measures had been taken prior in getting more accurate and precise results. Firstly , the experiment was repeated three times ( with the same slotted mass ) so that more accurate average time taken to complete one revolution can be found . In addition, this helps to make the result more reliable as repeating experiment at least three times can reduce anomalous result. Anomalous data is the flaws in experiment and may affect the accuracy of the result.
Then , the electronic weighing balance used in this experiment was zeroed before the weighing process took place. We cannot directly weigh all the apparatus on the weighing balance. As the electronic weighing balance is very sensitive , we must always tare or calibrate it until the reading become zero. This is to ensure that all of the equipment used in this experiment were weighed accurately.
Although it is assumed that the mass of the …show more content…
This is mainly because not everyone can whirl the rubber stopper at the constant rate during the experiment. Before we started the experiment , each one of us were given one chance to do the spinning. It turned out only one member was eligible in in doing that. We had decide to give him responsibility to whirl the rubber stopper as the other members do not know the correct technique to handle them and may lead to errors . The time given to do this experiment is very limited. This step is taken to ensure that there is no waste of time and can avoid
All the data obtained from this experiment is plotted on the graph. The accuracy and precision can be determined from the graph. Based on the graph , as the line do not pass the origin , it can be deducted that the result is fairly accurate. Since there are few outliers on the graph , the precision of this graph is moderate. Accuracy of the graph is affected by systematic errors while the precision is affected by random errors.
A few measures had been taken prior in getting more accurate and precise results. Firstly , the experiment was repeated three times ( with the same slotted mass ) so that more accurate average time taken to complete one revolution can be found . In addition, this helps to make the result more reliable as repeating experiment at least three times can reduce anomalous result. Anomalous data is the flaws in experiment and may affect the accuracy of the result.
Then , the electronic weighing balance used in this experiment was zeroed before the weighing process took place. We cannot directly weigh all the apparatus on the weighing balance. As the electronic weighing balance is very sensitive , we must always tare or calibrate it until the reading become zero. This is to ensure that all of the equipment used in this experiment were weighed accurately.
Although it is assumed that the mass of the …show more content…
This is mainly because not everyone can whirl the rubber stopper at the constant rate during the experiment. Before we started the experiment , each one of us were given one chance to do the spinning. It turned out only one member was eligible in in doing that. We had decide to give him responsibility to whirl the rubber stopper as the other members do not know the correct technique to handle them and may lead to errors . The time given to do this experiment is very limited. This step is taken to ensure that there is no waste of time and can avoid