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Question
If the roughness of a surface increases then the frictional force ________.
If the roughness of a surface increases then the frictional force ________.
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Solution
The correct option is A will increase
If two surfaces are in contact with each other and we try to move one surface relative to other then frictional force will act and try to oppose the relative motion. Now if the roughness of the contact surfaces are increased then the opposing force(i.e. frictional force) will also increase.
If two surfaces are in contact with each other and we try to move one surface relative to other then frictional force will act and try to oppose the relative motion. Now if the roughness of the contact surfaces are increased then the opposing force(i.e. frictional force) will also increase.
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