Dependence of friction on the force with which two surfaces are pressed together

Question 1 On what factors does the friction depends? Question 2 Which will cause more friction: a rough surface or smooth surface? Question 3 Iqbal has to push a lighter box and seema has to push a similar heavy box on the same floor.Who will have to apply a larger force and why? Question 4 Give an example to show that friction depends on the nature of two … [Read more...] about Factors affecting friction