GK
BASIC GENERAL KNOWLEDGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Friction can be reduced by changing from
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dynamic to static
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potential energy to kinetic energy
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rolling to sliding
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sliding to rolling
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Explanation:
Detailed explanation-1: -Sliding friction can be changed into rolling friction easily by providing wheels or ball bearings to the objects to reduce friction and facilitate easy movement.
Detailed explanation-2: -Since rolling friction is less than sliding friction, sliding friction is replaced with rolling friction in most machines using ball bearings.
Detailed explanation-3: -In rolling friction, the surface contact is less which results in less friction. Rolling friction is less than the sliding friction. Bearings are used to reduce friction and always work on the principle of rolling friction.
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