Why does friction damage the machines?

Important Questions on Force and Pressure

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

Would it be safe to walk on hardened snow with leather sole shoes? Explain giving reason.

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

What are the disadvantages of heat produced by friction in machines?

EASY

Science>Physics>Force and Pressure>Disadvantages of Friction

State two advantages and two disadvantages of friction.

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

Earth is moving round the sun without any slowing down. Give the reason behind it by considering the force of friction.

EASY

Science>Physics>Force and Pressure>Disadvantages of Friction

Give an example where friction is a limitation.

EASY

Science>Physics>Force and Pressure>Disadvantages of Friction

Soles of shoes wear out because of _____ (gravitation/ magnetic force/ friction).

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

Give reasons for the following:
Matchstick does not get ignited when strike against a smooth surface.

EASY

Science>Physics>Force and Pressure>Disadvantages of Friction

Four similar cars having exactly the same mass are running at the same speed on the same road when brakes are applied at the same time. The cars come to a stop after covering distances of$5 \mathrm{m}$,$5.5 \mathrm{m}$, $4.8 \mathrm{m}$ and $5.2 \mathrm{m}$ respectively. The friction between the brake pads and discs will be the maximum in the car which travels the distance of:

EASY

Science>Physics>Force and Pressure>Disadvantages of Friction

Give an example where friction is beneficial.

EASY

Science>Physics>Force and Pressure>Disadvantages of Friction

Why does a matchstick light when we strike it on a rough surface?

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

State two advantages of friction.

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

State two disadvantages of friction.

HARD

Science>Physics>Force and Pressure>Disadvantages of Friction

How friction plays an important role in our daily life?

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

Why do we call friction a 'necessary evil'?

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

Which parts wear away first in shoes? Give a reason for your answer.

EASY

Science>Physics>Force and Pressure>Disadvantages of Friction

Why is friction considered as 'Evil' of all motions? Explain with examples.

EASY

Science>Physics>Force and Pressure>Disadvantages of Friction

Cotyledons are also called-

EASY

Science>Physics>Force and Pressure>Disadvantages of Friction

Which of the following is not an advantage of friction?

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

Friction does not cause wastage of energy.

MEDIUM

Science>Physics>Force and Pressure>Disadvantages of Friction

Why is friction called a necessary evil?