(a) The coefficient of friction, µ, can be determined in an experiment by measuring the force F required to move a mass m. Where F is measured and m is known, the coefficient of friction can be calculated by:
µ = F/(mg) where g=9.81 m/s2
Results from measuring F in six tests are given in the Table 1. Determine the coefficient of friction in each test, and the average from all tests.
Table 1
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
|
[6 marks]
ANSWER
 The coefficient of friction, µ, can be determined in an experiment by measuring the force F required to move a mass m....){kind=link}
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