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    peter_simon2007's Avatar
    peter_simon2007 Posts: 3, Reputation: 1
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    #1

    Jan 1, 2009, 02:16 AM
    Friction (I really need it)
    What is the steepest incline that can be climbed by a car at constant velocity if the coefficient between the tires and the road is .60?
    visharad's Avatar
    visharad Posts: 47, Reputation: 4
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    #2

    Jan 2, 2009, 04:55 AM

    Let theta = angle of inclination
    What are the forces on the car? There are three forces
    1. Force of gravity vertically downward
    2. Normal force perpendicular to the incline
    3. Friction force up the incline
    Friction force = 0.60 * normal force
    Resolve all forces perpendicular to incline and make the resultant as zero
    Also resolve forces parallel to incline and make the resultant as zero
    From these equations, you will know the value of theta
    harum's Avatar
    harum Posts: 339, Reputation: 27
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    #3

    Jan 9, 2009, 07:26 PM

    Do you understand why in this problem a constant speed of the car is mentioned?
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