CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

In which of the following cases, friction is a friend?



A

Heating of a working mixer

loader
B

Noisy machines

loader
C

Wearing of machines

loader
D

Using pen for writing

loader

Solution

The correct option is C

Using pen for writing


Friction is called a necessary evil as it has many positive effects. For example, it is because of friction that we are able to walk and write.
While writing, the ball inside the pen rolls because of the frictional force acting between the ball and the surface of paper. This causes the ink to fall out on the paper. Otherwise, the ball slides if frictional force is absent.


Physics

Suggest Corrections
thumbs-up
 
0


similar_icon
Similar questions
View More


similar_icon
People also searched for
View More



footer-image