Answer :
Final answer:
The Ride Rate for the front and rear is determined by summing the tire spring rate and suspension rate. The natural frequencies for the front and rear can be calculated using the formula sqrt(Ride Rate/Mass).
Explanation:
To determine the Ride Rate for the front and rear, we can sum the tire spring rate and the suspension rate. The Ride Rate for the front is 1204 lb/in + 139 lb/in = 1343 lb/in. The Ride Rate for the rear is 1204 lb/in + 106 lb/in = 1310 lb/in.
To determine the natural frequencies for the front and rear, we can use the formula:
Natural frequency = sqrt(Ride Rate/Mass)
The mass for the front is Load per front tire/load per front suspension = 1140 lb/139 lb/in = 8.20 lb/in. The natural frequency for the front is sqrt(1343 lb/in / 8.20 lb) = 51.55 Hz.
The mass for the rear is Load per rear tire/load per rear suspension = 875 lb/106 lb/in = 8.25 lb/in. The natural frequency for the rear is sqrt(1310 lb/in / 8.25 lb) = 52.90 Hz.
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