Students calculated the mass of an object by measuring the force needed to hold the object in place.
Lab:
The lab came pre-set up as shown:
A string which held up an object is tied to two force measures that record the force needed to hold up the object.
The students first had to reset the force measures to zero to try to reduce error as much as possible. The students then attached the object to the string and let gravity pull the object down and the strings hold them up.
The students then recorded two key pieces of data from the experiment: the force being recorded on the force measures and the angle of the two parts of the string.
With these two pieces of data students then calculated the mass of the object.
Mass calculation:
Students then accounted for the error in the data with a data analysis by taking into account the a possible angle error of 2 degrees because of the angle measure and human error and the possible error of 0.5 newtons because of the inaccuracy of the force measures.
Error Analysis:
Students successfully calculated the mass of an object with the use of force measures and string.
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