1、Newton's law of gravity; Gravitational force from a shell; Hooke's 'law'.
克普勒圓周軌道第三定律；利用積分推導(dǎo)球殼的引力；彈簧。

2、slide-"Example: Newton's famous approximate formula for the gravitational force between two bodies.
幻燈片出現(xiàn)：牛頓著名的萬有引力公式。

3、And now we're going to multiply that by the gravitational force constant.
我們現(xiàn)在把這個結(jié)果，和重力常量相乘。

4、In fact, the moon's gravitational force is only one-sixth that of the Earth.
實際上，月球的引力只有地球引力的六分之一。

5、We are reluctantly accepted the gravitational force between matter and matter, even a look.
我們都在無奈中接受物與物之間的萬有引力，甚至是一個目光。

6、If they are three units apart the gravitational force between is one ninth.
如果有三個單位的距離，那么引力就是九分之一。

7、This strong connection is like a gravitational force on a higher dimension.
這種強(qiáng)烈的關(guān)系，就好像更高維次里的萬有引力。