Fig. 2
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Upper bound and lower bound of critical spin rate as the function of regolith cohesive strength C. (a−c) The friction angle is ϕ = 30° and the regolith thickness vavies from Hreg → 0 to Hreg = 0.10. (b) The friction angle is set to be a larger value ϕ = 40° and the thickness of the regolith is Hreg = 0.05. N: no mass shedding; PMS: possible mass shedding; and MS: mass shedding.
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