Question

what is friction what is rolling friction ,what is sliding friction what is static friction and what are the uses


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Answer 1

Answer:

Friction:the force which opposes the relative motion of two surfaces of the bodies which are contact is called frictional force. it acts on both the surfaces.

friction is caused by the interlocking of irregularities between the the two surfaces which are in contact

Rolling friction :when one body rolls over the surface of another body, the friction offered called rolling friction. Rolling friction is always less than sliding friction.

Sliding friction: the friction which comes into play when the surface of one object moves relative to the surface of another object in contact is called sliding friction or kinetic friction.

sliding friction is always less than limiting friction.

Static friction: the opposing force which comes into play when we try to move an object at rest at relative to another surface of object is called static friction.

when a force tries to move an object which is at rest then there may develop an opposing force parallel to the plane of contact to maintain the object at rest. this force of friction is called static friction

hence the static friction is developed equal to applied force F.

static friction is a self adjusting force

I hope it will helps you

Answer 2

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$\implies$ When the surface of one body moves tends to move on the surface of another body, then a forces generated which opposite the relative motion of the two bodies. This force is called Frictional Force or Friction.

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${\bold{\boxed{\mathscr{✠\:Rolling\:Friction}}}}$

➠It is the resistance produced when a rolling body moves over a surface. Rolling friction has a lesser magnitude than sliding friction. For example, small wheels in the suitcase of very less friction (rolling friction) and make it easy to carry heavy luggage.

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➠This is the frictional force between two surfaces when one body or object moves or attempts to move over the other. Sliding friction is the moment of force required to retain the state of motion of the moving object at the same speed. For example, when you apply force to an already moving box to keep it moving on the floor it with the same speed, the force determine sliding friction.

${\bold{\boxed{\mathscr{✠\:Static\:Friction}}}}$

➠It is the friction that works between two surfaces which are in contact, but there is no relative movement between them. Static friction is the amount of force applied at the instant when an object starts moving from its state of rest. For example, when you push a heavy box on the floor, the force that you apply to start it moving on the floor determines the stactics friction.

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