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Important Forces: Friction

by Jared Rovny
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    About the Lecture

    The lecture Important Forces: Friction by Jared Rovny is from the course Force.


    Included Quiz Questions

    1. Friction always acts in a direction to oppose the motion.
    2. Friction always acts in the same direction as the normal force.
    3. Friction is a directionless force and just produces heat.
    4. Friction always acts with the direction of an object’s motion.
    5. Friction only acts directionally for motionless objects.
    1. The static frictional force is greater than the kinetic friction.
    2. The static frictional force is less than the kinetic friction.
    3. The static and kinetic frictional forces must always be equal.
    4. Static and kinetic frictional forces must be equal and opposite.
    5. Kinetic friction will always act simultaneously to the static friction.
    1. The static frictional force will act to oppose other forces, even if they are small until a certain threshold is reached.
    2. The static frictional force must be less than the kinetic friction.
    3. The static friction must be less than the coefficient of static friction.
    4. The static friction will act to oppose other normal forces, but will always be less than the normal force it is opposing.
    5. The static friction will act to oppose the kinetic and normal forces until they are too great.
    1. It quantifies the roughness of the surface.
    2. It quantifies the strength of the normal force.
    3. It quantifies the coefficient of the normal force.
    4. It provides a ratio of kinetic and static forces.
    5. It is the force, in Newtons, that friction causes on an object.

    Author of lecture Important Forces: Friction

     Jared Rovny

    Jared Rovny


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