Question

4. What kind of friction comes to play:
A. When a block of wood kept on table moves slowly?
B. When a block of wood kept on table just tends to move or slip?
C. When a block of wood kept on cylindrical iron rods moves?
5. Explain why it is easier to drag a mat on floor when nobody is sitting on it
but much more difficult to drag the same mat on a person is sitting on it
11. Very short answer questions:
1. Name the force which always opposes motion.
2. Why does a fast car slow down if its engine is switched off.?
3. Which type of surfaces produces a) least friction and b) too much friction.
4. what is the direction of force of friction acting on a moving object?
5. Name a device which is used to measure force acting on an object.
6. What is a spring balance?
7. Which type of friction comes into play when a book kept on cylindrical
pencils is moved by pushing?
8. Why is it difficult to walk on a viet marble floor?
9. Why do we sprinkle fine powder on carrom board?​

Answer 1

Answer:

It s easy answer yourself.

Answer 2

Answer:

Explanation:

1st one.

A Kinetic friction.

B. Limiting friction

C. Rolling friction

Bro, If you don't mind I would like to give you a suggestion. Don't post all questions in one post. No body will like to see whether the question is interesting or not.