able 1: Varying the Acceleration by Changing Faet with mot Fixed mtot 1so IS0 .o

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able 1: Varying the Acceleration by Changing Faet with mot Fixed mtot 1so IS0 .olo2 kg ol 2K9 ,0031.er 14m(m/s) 17, la 35 | | 1.374 | %error m, (kg) 2n.coSI 25.005 m,(kg) 1130. 0051 a5o453 Fner (N) | | lo7c aexp(m/s) |6.3.:.17 6342.0 5.03247 |q.t .07 140.uosi |llo. ousi |1. 7 o 005100 00 S1 440.5 |4.5777 |w.167 12.2 3 Table 2: Varvinn the A m: . m2, mtot·a,theo. amp, and the percent error in Table 2. 3. Calculate the reciprocal of each of your values of axp Recoed these in the column in Note that in this expression, as will be done for this entire experiment, m, has been taken to be the larger of the two masses. Thus, the expeession for dehro above will never be negative.) With the definitions Table 2 labeled 1/aess (s/m) Questions (Use separate sheets of paper where necessary) Fser = (ma-m)g and mee = m, + m2. Using Excel or some other spreadsheet, make a graph of Foet vs axp from your values in Table 1. Include a best-fit line. Turn in a copy of this graph with your completed lab. Find the slope of the best-fit line and compare it with moe from Table 1. Comment on this comparison in the space below. Give the percent error between the slope of your best-fit line and meot Show your in 1. this expression for the theorctical acceleration becomes: r work in calculating the percent error This experession for ases can be recogaized to follow directly from Newton's second law: Fnet s the net external force on the system consisting of m, mg, and the string, while mz is the mass of this system In this experiment, you will assemble your own Atwood's machine setup and measure the acceleration of the masses. In Section A of the data recording for this experiment, you will vary the acceleration by changing Foet while keeping mtot fixed. This means that you will vary the difference of the masses whale keeping the sum fixed. In Section B of the data recording, you will vary the acceleration by changing mot while keeping Fner fixed. This means that you will vary the sum of the masses, but keep the difference fixed. For every pair of values you choose 2. Discuss briefly why you should expect your graph of Fnet VS. Rexp to look like a straight or m, and line. Why should you expect the slope of this graph to be close to meot? [Your answers to both of these questions should refer to Eq. (2).] Eq. () above

Explanation / Answer

you hve to first plot the graph between given data and then best fit it, and then calculate the percentage error.

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