Thank youSolution1 from data tables 2 to 4 we can say fricti

Solution

1. from data tables 2 to 4 we can say friction depends on

a) nature of two material in contact (as reading is different for different materials)

b) on surface area in contact

c) on normal force

2.it will be straight line curve where friction force will be along y axis and normal force will be along x axis.

3. coefficient of friction will be slope of straight line curve of part 2 so it will be friction force / normal force

calculating at point 0.5 , 1.6 than coefficient of friction = 0.5/1.6= 0.3125

4. sources of error may be because of improper contact between two surfaces , error while taking reading etc