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The pistons in an internal combustion engine undergo a motion that is approximately simple harmonic.
If the amplitude of motion is 3.8cm , and the engine runs at 1500rpm , find the maximum acceleration of the pistons.
Find their maximum speed.

  • Physics -

    First, convert rpm to angular velocity w, in radians/s

    w = 1500*(2 pi)/60 = 157.1 rad/s

    If A is the amplitude,
    Maximum speed = A w
    Maximum acceleration = A w^2

    Put A in meters/s to get speed in m/s and acceleration in m/s^2

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