So you can actually measure the mass of an object using a spring on the shuttle and let it oscillate if you know the spring constant, and that's the way it's actually done.

所以你可以,在飞船里用弹簧测量,物体质量，让它振荡,如果你知道弹簧常数，这也是实际操作中,所用的方法。

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We did a demonstration there with two vibrating objects with a spring, but yet the center of mass was moving with a constant velocity.

我们做过演示的，弹簧连接两个振动物体，但是质量重心，却保持稳定速度。

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The spring constant k equals ten newtons per meter, and the mass of the object is 0.1 kilograms.

弹簧常数k等于,牛顿每米，物体的质量，是0。1千克。

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