# Rounding a flat curve – dynamics of circular motion problems and solutions

1. A 2000-kg car rounds a curve on a flat road of radius 150 m. The coefficient of static friction

^{2}.

__Known :__

Mass (m) = 2000 kg

Radius (r) = 150 meters

Coefficient of static friction (μ_{s}) = 0.5

Weight (w) = m g = (2000 kg)(10 m/s^{2}) = 20,000 kg m/s^{2 }= 20,000 N

Force of static friction (F_{s}) = μ_{s }N = μ_{s }w = (0.7)(20,000 N) = 14,000 N

Wanted : v

__Solution :__

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