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19 February, 14:11

A trash can slides on a level floor after being pushed by an unhappy student. It slows and comes to a stop with a constant acceleration of - 2.4m/s2. What is the coefficient of kinetic friction between the trash can and the floor

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  1. 19 February, 15:18
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    Given:

    Acceleration, a = - 2.4 m/s^2

    Acceleration due to gravity, g = 9.8 m/s^2

    Sum of forces = 0

    Fr + F = 0

    Fr = µsl * m * g

    Since, Fn = m * g

    m * a = ( - µsl * mg)

    µsl = - a/g

    = 2.4/9.8

    = 0.245
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