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    janurokz's Avatar
    janurokz Posts: 2, Reputation: 1
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    #1

    Nov 1, 2008, 02:59 PM
    Finding Friction Force Based on Acceleration
    A passenger is pulling on the strap of a 15 [kg] suitcase such that the suitcase moves to the right ans speeds up. The tension in the strap is 70. [N] and the strap is inclined 35 degrees above the horizontal.

    If the acceleration is 1.3 m/s^2, find the frictional force acting on the suitcase.

    EH? How do you do a problem like this? I don't really understand how to find a frictional force based on acceleration. :confused:
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Nov 4, 2008, 02:42 AM

    Use F=ma

    Use trigonometry to find the force acting on the suitcase which is horizontal. Using F=ma, find the resultant force acting on the suitcase. The difference in force will be the frictional force.

    a is acceleration
    m is mass of suitcase
    F is force

    Hope it helped! By the way, post back your answer.

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