same as before.

In taking the versed sine of 6°, a minute error is involved, though not
one large enough to change the last figure in the above quotient. The
law of uniform acceleration does not quite hold when we come to an angle
so large as 6°. If closer accuracy is demanded, we can attain it, by
taking the versed sine for 1°, and multiplying this by 6². This gives as
a product 0.0054829728, which is a little larger than the versed sine of
6°.

I hope I have now kept my promise, and made it clear how the coefficient
of centrifugal force may be found in this simple way.

We have now learned several things about centrifugal force. Let me
recapitulate. We have learned:

1st. The real nature of centrifugal force. That in the dynamical sense
of the term force, this is not a force at all: that it is not capable of
producing motion, that the force which is really exerted on a revolving
body is the centripetal force, and what we are taught to call
centrifugal force is nothing but the resistance which a revolving body
opposes to this force, precisely like any other resistance.

2d. The direction of the deflection, to which the centrifugal force is
the resistance, which is straight to the center.

3d. The measure of this deflection; the versed sine of the angle.

4th. The reason of the laws of centrifugal force; that these laws merely
express the relative amount of the deflection, and so the amount of the