Answer
$a_m=5.7\frac{Km}{s^2}$
Work Step by Step
The magnitude of maximum acceleration can be calculated through the formula:
$a_m=x_m\omega^2$
We plug in the known values to obtain:
$a_m=0.00075(2.8\times 10^3)^2=5.7\frac{Km}{s}$
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