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  3. the person’s mass, m= 68.1 kg, the unknown

The person’s mass, m= 68.1 kg, the unknown drag coefficient is, c , with units kg/s,...

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Mechanical Engineering

The person’s mass, m= 68.1 kg, the unknown drag coefficient is,c , with units kg/s, and the local acceleration of gravity is g=9.80 m/s2 . Our model for the person’s velocity vs time gave us alinear differential equation whose analytical solution was thefollowing:
V(t) = g*m/c*[1-exp(-c/m*t)].


Your job is to find “c”. You need to use the MATLAB “help”documentation to find the nonlinear curve fitting function andsyntax for how to use it. Hint you should use the documentation andexample for “lsqcurvefit”.
Include in your program a plot of the experimental velocity data vstime and the calculated velocity vs time. The graph should have atitle, x and y labeled axis, and a legend. It is likely your legendwill not be placed in a good position. Use again the MATLAB “help”documentation to learn how to move it to the southeast cornerinside your plot.

The following table is experimental data regarding ourparachutist. We have a measured velocity versus time after thejump, but before the chute is opened:
Time t (sec)

Velocity, cm/s
0


1
1000
2

1630

3
2300
4

2750
5

3100

6
3560
7

3900

8
4150
9

4290

10
  
4500

11
4600
12

4550

13
4600
14

4900

15
5000

Answer & Explanation Solved by verified expert
3.5 Ratings (510 Votes)
clcclear allm 681g 981tdata 015vdata 0 1000 1630 2300 2750 3100 3560 3900 4150    See Answer
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