HARD
Earn 100

Friction is both enemy and friend in our daily life. Explain.

Important Questions on Force and Machine

MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Give reasons for the following:
Matchstick does not get ignited when strike against a smooth surface.
EASY
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Give an example where friction is a limitation.
EASY
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Why does a matchstick light when we strike it on a rough surface?
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Earth is moving round the sun without any slowing down. Give the reason behind it by considering the force of friction.
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
State two disadvantages of friction.
EASY
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Why is friction considered as 'Evil' of all motions? Explain with examples.
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Give reasons for the following:
Engine of a car gets heated on running.
EASY
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Which of the following is not an advantage of friction?
EASY
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Give an example where friction is beneficial.
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Friction does not cause wastage of energy.
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Would it be safe to walk on hardened snow with leather sole shoes? Explain giving reason.
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Why is friction called a necessary evil?
EASY
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Soles of shoes wear out because of _____ (gravitation/ magnetic force/ friction).
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Why do we call friction a 'necessary evil'?
EASY
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
State two advantages and two disadvantages of friction.
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
What are the disadvantages of heat produced by friction in machines?
EASY
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
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 m, 5.5 m, 4.8 m and 5.2 m respectively. The friction between the brake pads and discs will be the maximum in the car which travels the distance of:
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
Which parts wear away first in shoes? Give a reason for your answer.
HARD
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
How friction plays an important role in our daily life?
MEDIUM
Science>Physics>Force and Machine>Use of Frictional Force in Daily Life
State two advantages of friction.