Physical and Mechanical Properties of Selected Common Beans (Phaseolus vulgaris L.) Cultivated in Tanzania

Table 4

Frictional properties for dissimilar sliding surface materials.

Surface material	Common beans type	Angle in degrees		Coefficient of friction
		Single Seed	Remaining Seeds	Single Seed	Remaining Seeds
Ply Wood	Uyole-96	24	30	0.45	0.58
	Kablanketi	23	29	0.42	0.55
	Wanja	20	27	0.36	0.51
Plastic	Uyole-96	20	26	0.36	0.49
	Kablanketi	18	24	0.33	0.46
	Wanja	18	23	0.33	0.42
Mild Steel	Uyole-96	18	22	0.33	0.40
	Kablanketi	17	20	0.31	0.36
	Wanja	17	20	0.31	0.36
Aluminium	Uyole-96	17	21	0.31	0.38
	Kablanketi	16	19	0.29	0.34
	Wanja	16	19	0.29	0.34
Stainless steel	Uyole-96	16	20	0.29	0.36
	Kablanketi	15	19	0.29	0.34
	Wanja	15	18	0.27	0.33