A two-wheeled trailer has springs fitted which deflect 10 cm under the weight of the trailer which is 500 kgf. The distance between the successive peaks is 15 m and the depth between peaks and valleys is 5 cm. The trailer moves at a speed of 60 kph. Calculate the ratio of machine frequency to natural frequency up to 3 decimal places. Take, g = 9.8 m/s2
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