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4 October, 04:46

A mover pushes a 30 kg crate across a level florr with a force of 250 N, but the crate accelerates at a rate of only 5.83 m/s squared because a friction force opposes the crate's motio. What is the magnitude of the force of friction?

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  1. 4 October, 05:44
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    Force of friction=75 N

    Explanation:

    we use Newton's second law of motion

    F - Ff = ma

    F = applied force=250 N

    Ff = force of friction

    a = acceleration = 5.83 m/s²

    m = mass=30 kg

    250 - Ff = 30 (5.83)

    Ff=250-30 (5.83)

    Ff=250-175

    Ff=75 N
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