Friction Test - 3

Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play

To sharpen the blade of a knife by rubbing it against a surface which of the following will be most suitable?

A toy car released with the same initial speed will travel farthest on

If we apply oil on door hinges, the friction will

Which of the following statements is incorrect?

A boy rolls a rubber ball on a wooden surface. The ball travels a short distance before coming to rest. To make the same ball travel longer distance before coming to rest, he may

In a large commercial complex there are four ways to reach the main road. One of the paths has loose soil, the second is laid with polished marble, the third is laid with bricks and the fourth has gravel surface. It is raining heavily and Paheli wishes to reach the main road. The path on which she is least likely to slip is