Example
An EV has a mass of 500kg, a gear ratio of 2:1, and a wheel radius of 0.25m
- What is the force required to accelerate the vehicle at a constant rate of 5km/hr/sec?
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- What will be the force to accelerate the vehicle at 5km/hr/sec including just the rotating masses?
F = ma = (500kg)(5km/hr/sec) = 694N
N/V = 2.653 * (n1/n2)(1/r) = 2.653(2)(1/.25)
a = 5km/hr/sec*21.2rpm/km/hr = 106 rpm/sec