Place of greatejl Attraction. $ 
3. To find now the attraction of the whole right- 
angled cuneus on a body at a in the direction ab. — ■ 
Since the force of each feCtion is sr by the laft article, 
therefore the force of all the feCtions, the number of 
them being ab or a , is ass -s. ab . — the force of the 
whole cuneus abceda. 
4. To find the attraction of the rect- 
angular part abcd on a in the direction 
ab ; abcd being one fide of the cune- 
us, and ad its edge. — Put ad = bc = b, 
and ab = x. Then, the force of any feCtion as bc being 
always as sr by Art. 2, the fluxion of the force or/ 
will be = ssx = sx x ^ = sx x — — — = - - isx ■ - ; and the 
fluent is f -bs x hyp. log. of ■■ + y- +il = s. bc x hyp. log.. 
AB+A — = the attraction of abcd. 
c 5. To find the attraction of the 
right-angled part bcd of a cuneus 
whofe edge pafles through a the 
place of the body attracted.. — Put 
, bc = b, bd = c, da - d = a- e, dc = e, ac = g, 
and dp = x. Then, the force of any feCtion pq^ being 
ftill as sr, the fluxion of the force of the part dp eg is/ 
hsxx * and the correCt fluent 
. PO 
srA — sx x fg — 
AO. 
\t r d z -p 2c dx + Sr 
