The blackbox recorder from an airplane that hit a patch of severe turbulence indicated that the plane moved up and down with an amplitude of 30.0 m and a maximum acceleration of 1.8 g. assuming the vertical motion was shm find the period find the plane’s maximum vertical speed

T = 8.19 s ,    = 23 m / s

Explanation:

In the simple harmonic motion the equation that describes them is

    y = A cos wt

Acceleration can be found by derivatives

    a = d²y / dt²

   v = dy / dt = - Aw sin wt

   a= d²y / dt² = - A w² cos wt

For maximum acceleration cosWT = + -1

    = -A w2

    w = RA (/ A)

    w = RA (1.8 9.8 / 30.0)

    w = 0.767 rad / s

The angular velocity is related to the frequency

    w = 2π f

     f = 1 / T

    w = 2π / T

    T = 2π / w

    T = 2π / 0.767

    T = 8.19 s

For maximum speed the sin wt = + -1

    = A w

     = 30.0 0.767

     = 23 m / s

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no

sodium is solid at rt