A car of mass 1120 kg is travelling along a curved unbanked road of radius 60 m. Its wheel tract is 135 m and its centre of gravity is 0.9 m above the ground, and midway between front and rear axles. The coefficient of friction is 0.5. Find (a) the vertical ground reaction at each wheel when the car is travelling at 15 m/s; (b) the maximum speed without overturning; (c) the skidding speed.
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