Engineering Fundamentals: An Introduction to Engineering, 4th ed.c

502 Chapter 15 MATLAB

Force (N) Spring Deflection (mm)

59

10 17

15 29

20 35

Fluid Velocity (m/s) Radial Distance (m)

0.1 0

0.08 0.17

0.06 0.33

0.04 0.42

0.02 0.49

0 0.5

0.02 0.48

0.04 0.43

0.06 0.32

0.08 0.18

0.1 0

Temperature (°C) Time (hr)

900 0

722 0.2

580 0.4

468 0.6

379 0.8

308 1.0

252 1.2

207 1.4

172 1.6

143 1.8

121 2.0

103 2.2

89 2.4

78 2.6

69 2.8

62 3.0

15.28.Find the equation that best fits the force-deflection data

points given in Table 10.1(a). Compare the actual and

predicted force values. Plot the data first.

15.31.Write a function named Weightthat when called in

the command window will compute the weight in

pound force based on an input of mass in kilograms.

15.32.The Body Mass Index (BMI) is a way of determining

obesity and whether some one is overweight. It is

computed from. Write

a program that will create the table shown in accom-

panying figure. The BMI values in the range of

18.5 – 24.9, 25.0 – 29.9, and 30.0 are considered

healthy, overweight, and obese, respectively.

BMI

mass 1 in kg 2

3 height 1 in meter 24

2

15.29.The data given in the accompanying table represents

the velocity distribution inside a pipe. Find the equa-

tion that best fits the fluid velocity-radial distance data

given. Compare the actual and predicted velocity val-

ues. Plot the data first.

15.30.The data given in the accompanying table represents

the cooling temperature of a plate as a function of time

during a material processing stage. Find the equation

that best fits the temperature-time data given. Com-

pare the actual and predicted temperature values. Plot

the data first.

Mass (kg)

Height

(m) 50556065707580

1.5 22.2 24.4 26.7 28.9 31.1 33.3 35.6

1.6 19.5 21.5 23.4 25.4 27.3 29.3 31.3

1.7 17.3 19.0 20.8 22.5 24.2 26.0 27.7

1.8 15.4 17.0 18.5 20.1 21.6 23.1 24.7

1.9 13.9 15.2 16.6 18.0 19.4 20.8 22.2

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