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Static and Kinetic Friction, Laws of Friction | PadhAiPro

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CASE_STUDIESStatic and Kinetic FrictionLaws of Friction5 sub-questions

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A cyclist speeding at 18 km/h on a level road takes a sharp circular turn of radius 3 m without reducing the speed. The co-efficient of static friction between the tyres and the road is 0.1. Will the cyclist slip while taking the turn?

TextStatic and Kinetic FrictionVehicle on Level Circular Road

A: Angle of repose is 30°. Coefficient of friction between object and a surface is 1/√3. R: Coefficient of friction is equal to tan (angle of repose).

Assertion-Reason

Laws of Friction

A: when an object is placed on a surface the frictional force between the surface and the object is more if the mass of the object is heavy. R: static friction is directly proportional to normal reaction.

Assertion-ReasonStatic and Kinetic Friction

Assertion- Due to friction between tyres and road there is wear and tear of tyres Reason- Friction is a necessary evil

Assertion-ReasonLaws of Friction

Assertion- Frictional force is non conservative force Reason- frictional force depends on the path not on initial and final position of the object.

Assertion-ReasonLaws of Friction

Using an example justify that the friction is a necessary evil give three advantages and disadvantages of friction mostly observed in our daily routine.

TextLaws of Friction

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