write down the laws of limiting friction..??
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to avoid friction you should use different types of lubricants
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Laws of Limiting Friction
Statement about factors upon which the force of limiting friction between two surfaces depends, are termed as laws of limiting friction. They are stated below.
i) the direction of force of friction is always opposite to the direction of motion.
ii) The force of limiting friction depends upon the nature and state of polish of the surfaces in contact and acts tangentially to the interface between the two surfaces.
iii) The magnitude of limiting friction ‘F’ is directly proportional to the magnitude of the normal reaction R between the two surfaces is contact i.e.
F α R
iv)The magnitude of the limiting friction between two surfaces is independent of the area and shape of the surfaces in contact so long as the normal reaction remains .
I hope this answer helps u...
Statement about factors upon which the force of limiting friction between two surfaces depends, are termed as laws of limiting friction. They are stated below.
i) the direction of force of friction is always opposite to the direction of motion.
ii) The force of limiting friction depends upon the nature and state of polish of the surfaces in contact and acts tangentially to the interface between the two surfaces.
iii) The magnitude of limiting friction ‘F’ is directly proportional to the magnitude of the normal reaction R between the two surfaces is contact i.e.
F α R
iv)The magnitude of the limiting friction between two surfaces is independent of the area and shape of the surfaces in contact so long as the normal reaction remains .
I hope this answer helps u...
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