Question

a) area unchanged
b) force unchanged
3. Imagine that friction disappeared from the earth.What will happen? Explain.(
(
(
Multiple Choice Questions
1. Hoisting a flag is related to
a) push b) pull c) Push and pull both d) pressure
2. A person is pulling water from well. Which type of force it is
a) Muscular force
b) Magnetic force
c) Friction force
d) Electrostatic force
3. The force that a solid surface exerts on any object in the normal
direction is called
a) Muscular force
b) Normal Force
c) Tension force
d) Magnetic force
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Answer 1

Imagine that friction disappeared from the earth. What will happen? Explain?

• We can not write, sit, stand, walk and nothing.

• Friction is directly proportional to roughness of the surface.

• So it there is no roughness, What will happen? Everything will smooth right?

• If we walk we tend to slip as the surface will be smooth without friction.

• There is no life on earth if there is no Friction$.$

1. Hoisting a flag is related to ?

a) push b) pull c) Push and pull both d) pressure

Ans - c) Push and pull both

2. A person is pulling water from well. Which type of force it is

a) Muscular force

b) Magnetic force

c) Friction force

d) Electrostatic force

Ans - a) Muscular force

3. The force that a solid surface exerts on any object in the normal direction is called ?

a) Muscular force

b) Normal Force

c) Tension force

d) Magnetic force

Ans - b) Normal Force