A group of students, performing the same \"Uniform Circular Motion\" experiment

Question

A group of students, performing the same "Uniform Circular Motion" experiment that you performed in lab, obtained the following results. For this table, r is the distance from the center of rotation to the radius indicator (i.e., the post that marks the position of the center of the bob during rotation), m_ is the total hanging mass (including the hanger), and t is the time required for 50 complete rotations. (a) Use Excel to construct a spreadsheet that show the following. (You will not submit this spreadsheet. However, the results will be needed later in this problem.) (i) the above data (ii) all calculations needed to compute the acceleration, a, for each trial (ii) a graph of m_hg vs a_c (iv) Use the trendline option to draw the best fit line and determine its slope (b) Report this value below. mass of the bob =

Explanation / Answer

a)The time period for 1 rotation is found out by dividing the total time period by 50.

The acceleration values are

2.965117
4.609716
4.40282
5.165144
6.986203

The mh g value are

0.72716
1.059184
1.157968
1.361024
1.60524

b) Slope is 0.219kg. So mass of the bob is 0.219kg

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