Advertisements
Advertisements
Question
Match the following.
Column I | Column II | |
a) | Static friction | Viscosity |
b) | Kinetic friction | Least friction |
c) | Rolling friction | Objects are in motion |
d) | Friction between the liquid layers | Objects are sliding |
e) | Sliding friction | Objects are at rest |
Solution
Column I | Column II | |
a) | Static friction | Objects are at rest |
b) | Kinetic friction | Objects are in motion |
c) | Rolling friction | Least friction |
d) | Friction between the liquid layers | Viscosity |
e) | Sliding friction | Objects are sliding |
APPEARS IN
RELATED QUESTIONS
Fill in the blank.
We use ball bearings to .................. the friction.
Arrange the following in descending order:
- static friction
- sliding friction and
- rolling friction?
Answer the following.
What do you understand by a force?
Fill in the blank.
Rolling friction offers ............. resistance than sliding friction.
Tick the most appropriate answer.
A car skids on a wet or muddy road due to
Answer the following in a word or two or in a sentence.
Why is difficult for a pen to leave a mark on a highly smooth plastic sheet?
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Answer the following in short.
When you push something heavy, the resistance you feel decreases as soon as the object starts moving. Explain the reason.
Explain how friction can be minimized.
We have two identical metal sheets. One of them is rubbed with sand paper and the other with ordinary paper. The one rubbed with sand paper shines more than the other. Give reason.