Problem:

**The co-efficient of friction mu can be determined in an experiment by measuring the force F required to move a mass m. when F is measured and m is known the coefficient of friction can be calculated by mu=F/mg (g=9.81 m/sec**^{2) }results from measuring F in six tests are given in the table below. Determine the coefficient of friction in each test, and average from all tests.Test # | 1 | 2 | 3 | 4 | 5 | 6 |

Mass m-kg | 2 | 4 | 5 | 10 | 20 | 50 |

Force F -N | 12.5 | 23.5 | 30 | 61 | 117 | 294 |

USING MATLAB SOFTWARE

SOLUTION:

%IN COMMAND WINDOW

SOLUTION:

%IN COMMAND WINDOW

>> m=[2 3 5 10 20 50];

>> f=[12.5 23.5 50 61 117 294];

>> mu=f./(m*9.8)

mu =

0.6378 0.7993 1.0204 0.6224 0.5969 0.6000

>> mu_avg=mean(mu)

mu_avg =

0.7128