Q17 of 18 Page 12

Name the two factors on which the magnitude of the frictional force depends.

(i) Friction depends on the nature (smoothness) of surfaces in contact (ii) Friction depends on how hard the two surfaces press together.

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14 What is fluid friction? 15 On what factors does the fluid friction depend on?   16 How the fluid friction can be minimized? 18 Enlist any four methods of reducing friction.