So for the water to be ejected from the fur, the centripetal force has to exceed the surface tension.

所以，要让水从皮毛弹出，向心力必须超过表面张力。

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And there has to be here a force on the system, the gravitational force, which is the same as the centripetal force.

这个系统中，存在重力，和向心力相等。

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After some treatment of centripetal force, he deduces Kepler's third law.

在向心力的一些论述之后，他推出了开普勒的第三定律。

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Yet falling transport costs have made this centripetal force less important over the past half-century, leaving many industrial cities, like Detroit, in deep trouble.

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To get finer shots from a swaying helicopter Segal modified his 360-degree panoramic cameras to spin two revolutions per second, creating a gyro effect whose centripetal force stabilizes the lens.

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