A stone tied to a string 0.80 m long is whirled in a vertical circle. Taking g = 9.8 m/s², what is the smallest speed at the bottom that takes it round the full circle?

PhysicsHardHigh School (11–12)Mechanics › Work, Energy and Power

A stone tied to a string $0.80\ \text{m}$ long is whirled in a vertical circle. Taking $g = 9.8\ \text{m/s}^2$ , what is the smallest speed at the bottom that takes it round the full circle?

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