Friction

Front

Friction is a

Back

contact force

Front

Factors on which friction depends

Back

Nature of the surfaces and how hard the objects are pressed together

Front

A toy car released with the same initial speed will travel farthest on: Muddy surface, polished marble surface, cement surface, brick surface

Back

polished marble surface

Front

Why is it difficult to walk on an oily floor?

Back

Force of friction is very less

Front

How can friction be increased by making the surface?

Back

rough

Front

In the figure, a boy is seen pushing a box from right to left. The force of friction will act on the box.

Back

from left to right

Front

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 a 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: polished marble, bricks, gravel, loose soil.

Back

gravel

Front

Two blocks of iron of different masses are kept on a cemented floor. Which one of them would require a larger force to move it from the rest position?

Back

box B

Front

Which of the following materials is likely to have least friction? Options: Wood, Cardboard, Glass, Paper

Back

Glass

Front

Which of the following statements is true?

• Friction pulls objects towards the centre of the earth
• Friction primarily affects the objects that contain iron
• Friction slows down or stops objects in motion
• Friction does not affect objects in motion

Back

Friction slows down or stops objects in motion