1
Question
Mention three methods by which we can reduce friction between two bodies.
[3 MARKS]
Mention three methods by which we can reduce friction between two bodies.
[3 MARKS]
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Solution
Answer : 1 Mark for each method
Use any of the following methods to reduce friction:
(I) By applying a lubricant.
(II) By using ball bearing.
(III) By polishing surfaces.
(IV) In the machines where oil cannot be used air cushion between the parts is used to reduce friction.
(V) By streamlining.
Answer : 1 Mark for each method
Use any of the following methods to reduce friction:
(I) By applying a lubricant.
(II) By using ball bearing.
(III) By polishing surfaces.
(IV) In the machines where oil cannot be used air cushion between the parts is used to reduce friction.
(V) By streamlining.
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