时差N小时 坐旋转木马会头晕?(下)（在线收听）

Generally speaking, the larger the circle you move in, the greater the centripetal force you experience.

一般来说,你所处运动的圆圈越大,你所经历的向心力就越大。

So, the farther you move away from the center of the merry-go-round, the more force the merry-go-round must exert on you to keep you moving in that circle.

因此你距离旋转木马的中心越远,旋转木马就会施加更大的力使你保持在圆圈中运动。

All this extra force on your inner ear can make you lose your balance and feel quite dizzy.

所有这些你内耳中的额外力会让你失衡并且感到很头晕目眩。

Another way to see centripetal force in action is with an old-fashioned record player.

另一种观察向心力运动的方法是使用老式唱片机。

Place a penny near the center of a spinning record, and it will stay in place as it turns.

在旋转唱片中心附近放一枚一便士,而后它将保持在原地旋转。

Put the penny on the edge, however, and it will fly off the record, giving visible proof that the force at the edge of a spinning object is greater than at the center.

如果将硬币放在边缘,它会从唱片上飞走,这足以证明旋转物体边缘的力量要大于中心处。