MECHANICS

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  1. physics classroom25 December 2018 at 10:17

    FRICTION
    When a solid is in contact with another, the roughness of their surface prevents them from sliding freely over one another. Such action is brought about by the effect of friction.
    Friction is defined as a force, which acts at the surface of separation between two objects in contact and tends to oppose the motion of one over the other. Frictional forces act tangential to the surface of separation between two bodies in contact. Friction is a force of opposition.

    TYPES OF FRICTION
    There are two major types of friction namely:
    a. Static friction
    b. Kinetic or dynamic friction
    Static friction: This is the maximum force that must be overcome before a body can just start to move over another.
    Kinetic or dynamic friction: This is the force that must be overcome so that a body can move with uniform speed over another body.

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