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WorksheetsFriction
Total questions: 12
Worksheet time: 7mins
The force of friction acts in a direction _____ to the direction of motion of object.
Same
opposite
perpendicular
diagonal
The force of friction depends upon
Nature of surface of contact
Material of objects in contact
Both ‘a’ and ‘b’
None of the above
The body will move only when
Force of friction = applied force
Force of friction < applied force
Force of friction > applied force
All of the above
Which one of these characteristics does a smooth surface has?
Less frictional force
More frictional force
Sometimes less and sometimes more force
All of above
Friction is a __________
Contact force
Non-contact force
Magnetic force
None of these
What kind of substances are known as lubricants
Increase friction
Decrease friction
Increase or decrease friction
None of these
Fluid are____
Gases
Liquids
Gases and liquids both
None of these
Rolling friction is smaller than?
Sliding friction
Static friction
Fluid friction
All of the above
The shape of the airplane is (a)
In the figure,a boy is pushing the box from right to left. The force of friction will act on the box-
from right to left
from left to right
vertically downwards
vertically upwards
If we apply oil to the door hinges, the friction will
increase
decrease
disappear all together
will remain unchanged
Which of the following statements is incorrect
friction acts on ball rolling along the ground
friction acts on a boat moving on water
friction acts on a bicycle moving on a smooth road
friction does not act on a ball moving through air
