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If r = 30 m and μ = 0.4, what is the maximum velocity vmax?

1. vmax = √μRg
2. vmax = √(0.4 × 30 × 9.8) = 10.84 m/s
3. vmax = √Rg
4. vmax = √(μ × R × g)

Correct answer: vmax = √(0.4 × 30 × 9.8) = 10.84 m/s

Solution

The maximum velocity for circular motion on a flat surface is given by vmax = √(μRg). Substituting μ = 0.4, R = 30 m, and g = 9.8 m/s², we get vmax = √(0.4 × 30 × 9.8) = 10.84 m/s.

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