j 5 2 Dr. Waring w 
Cor. U The force of the area contained between the 
two circles kab and led on the particle P will be as 
p.\ 
/>A 
r^p/ 
l - nVl 
15. Let a folid be generated by the rotation of a given 
curve round a line in the axis P 0 or Vo produced, and A the 
diftance of P from 0, and x=diftance of any circle gene- 
rated bv the rotation of a point in the curve round the axis 
Vo from o ; and y the ordinate to the given curve, of which the 
abfeifs is x; and the fame things be fuppofed as before; 
/- I r Ti 4.U., P usrv ns. 
p ft x A — xxx 
f pa .) 
r ft x A — jf x x 
1 a -*)”- 1 
^ n — L (A—x) n ~~ 2 ^ 
0 
w— 1 x ( A— * f y ' 
n — 1 
IT 
JUCL LilC fcMVCU lUivu uv_ « 
& 2 1 r pX 
and radius/, and confequently y —f -x , and J— * 
p x .A — * X X p — — 
/ 
-Ji . 
n — 1 . (A — * +>> 
ft* X A — * 
) 
>1 — 1 
z 
n — 1 X ( A 2 4 - 
A 2 -M 2 
»- 1 . »-3 x ( A — *')”" 3 
p__ P_ f 1 + ' 
»-4A a + ^-»-3 AAf ) xf A* + i “- lAx) 1 • 
n~s- n ~~ 3 A * n ~ 5 A m- 5 -«- 3 xA 
By fubftituting -/ and t for * in the preceding exprefnon 
the attraftion of the whole globe on the particle P will be 
, p (A ’ + ~iAt + e TTl 3- ” ox _ ^rJLzJ^l±L >c 
A^ 3_ ”(H)). , f 
ib If the particle be fituated within the globe, and conle- 
quently A lefs than / or - A and n be an odd number negative 
