[ 8*3 ] 
DC, XC, ipfis HX, S D, parallels. Turn dudla 
chorda quavis MN ad diametrum IK normali eam- 
que fecante in L, ex pundlis M, N, demittantur in 
S R perpendiculares MR, NR, concurrentes in Rj 
jundtifque SM, SN, erit SM=SN, MR = NR, 
SR = HL. Dicantur jam SD, k ■ HX five DC, h\ 
XL, x ^ CX, 2; ; XI, r j eritque HL = h — x, et 
SH — k — z. Eft autem SM ad SH ut attradlio 
~T corporis S verfus particulam M in diredtione 
SM ad ejufdem corporis attradlionem in diredlione 
n rT 
SH, quae proinde erit : fed eft SR = HL, et 
SVP 5 
SM" = SR 2 -}- MR 2 = SR 2 + SH 2 + ML 2 ; unde fit 
SH SH 
et d udla mn parallels 
SM 3 * HL 2 +SH 2 + ML- 
ad MN, vis qua corpus S attrahitur ad arcus quam 
minimos Mm, N», exponitur per ~! Mm . „ 
_ SM 3 
SH x zMm x hl 2 -f sH z -f ML 2 ” 1 . Eft autem 
HL" 4 - SH" 4 " ML : = kk — 2 kz 4 " zz 4 " hh — 2 hx 4- rr y 
hincque ponendo kk 4- hh = //, HI* 4. SH 2 = ML 2 
2 kz 
° ^ ; 
2 / 5 
. 3 hx 2 rr 3 zz 
/3 1 /s \ 4; TB~~TF~ 
i$kkzz . 15 khzx , 
1 — ~i — r 
2 1 1 [ 2 L 1 
1 $bbxx . _ . . . , 
2/7 j negledtis terminis ultenoribus ob longinqui- 
tatem quam fupponimus corporis S. Quare, fi fcri- 
batur d pro circumferentia IMKN, gravitas corporis 
S ad totam illam circumferentiam fecundum SH, 
five fluens fluxionis SH x 2 Mm x fffi 2 ~4_ sh 2 + ml 2 ” * 
evadit. k — z x d in ~ 4- VZ 4. 
/ 3 ‘ / 5 2 I s 2 l 5 ^ 
15 Mzz 
2 P 
