4 What is lubricant? How does a lubricant reduce friction?
5. State two advantages and two disadvantages of friction?
(a) Advantages:
Answers
Answered by
2
Answer:
lubricant is liquid used to reduce friction
Answered by
0
Answer:
4.Lubricant - lubricant is a substance which is used to reduce friction between to bodies which are in contact such that friction occurs.
Lubricant fills the rough surfaces of the body and makes it smooth thus reducing friction
Advantages of friction
- helps in walking
- helps in writing
Disadvantages of friction
- it causes wear-tear
- produces heat (in machine causes abnormalities)
Similar questions