414 The Inverfe. Method 
eat ot. aE EY a7 
and then 4*+* = ut - Hence, by 
+ ° | o ) U 
fubftitution and reduction, * =— x 
fe Cc 
fo Mm x rh. a “da . 
y= De RSE grt 
from whence the relation of x and 7 may be 
determined. 
' Let V= velocity of a body ina Bieta at ‘ie 
diftance r from the centre of force, and -which 
is acted upon by the fame force as that which 
tends towards the plane at the fame diftance 
V. > Arts nosed taatie 
from it; then =a or “t= py \ 
yt; from whence, and the equation above, 
m—1 KX c? ¢"—1 
y it will IL eafily appear 
viz. Att = 
I a mseP 
that ¢c = vies ; therefore = the aon equa- 
b Vn—y1 7 
VXV2 x 
1 x pa ah | aie 
~ Cor. 1. If c, and confequently =o, or, 
which is the fame thing, if the body be pro- 
jected parallel to the horizon, then & = 
n—1 
tion becomes x == 
b 
