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16 August, 23:25

A rear wheel drive car of mass 1000 kg is accelerating with a constant acceleration without slipping from 0 to 60 m/s in 1 min. What will be friction force acting on each rear wheel of the car? (a) - 1000 N (b) - 60000N (c) - 30000N (d) - 500N

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  1. 17 August, 00:23
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    500 N

    Explanation:

    Given;

    Mass of the car, M = 1000 kg

    initial speed of the car, u = 0 m/s

    Final speed of the car, v = 60 m/s

    Time, t = 1 min = 60 s

    Now,

    Force, F is given as:

    F = Ma

    where,

    a is the acceleration

    From the Newton's equation of motion, we have

    v = u + at

    on substituting the values, we get

    60 = 0 + a * 60

    or

    a = 1 m/s²

    Thus,

    Force = 1000 * 1 = 1000 N

    now,

    this force will be equal to the friction force provided by the rear wheels

    let the friction force on a single rear wheel be 'f'

    thus,

    2f = 1000 N

    or

    f = 500 N
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