Question

6 N
8
No
D) Area of contact
NAON sroil B) IGN
NO
CION
3. Among the following frictional forces which one is self-adjustment force
D BND bis
is ja
LAT
A) Static Friction
B) Fluid Friction
C) Sliding Friction D) Rolling Friction
4. Friction does not depend on
IB
A) Nature of the surfaces
B) Normal force between surfaces
C) Speed and shape of objects
II. Answer the following very short answered questions.
4 x 2 = 8
5. Comb your dry hair-Bring the comb to small pieces of paper. What do you observe? 10
Explain.
) 6. Define pressure. Write S.I units of pressure. ist
7. There is a book on a table. You pushed the book towards right side. Draw a Free Body
Diagram (FBD) to show various forces acting on the book.
8. Write any two ways to reduce the frfction.
1. Answer the following short answered questions. CO2 2 x 4 =
9. How can you differentiate between a contact force and field force? Explain with example
10. Give examples to show that friction is both good and an evil?
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Answer 1

Answer:

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