4

O

Secundum directionem O o

dpdt

— (B-t-C)a^cos ^—Cbdvfofy (B—j— f—Qafysini)

Secundum directionem Owdx —

dt

(A —j— B —j—

dt

Aa</<?oos£ — Cbdi\ cos»)

(A—(—B—|—C) dtdy

dt

Asli^fin^—)— C^slfysin))

(A-4-B-HC)*

(A-+-B-+-C)*

dr __

dz

dt ~~

dt

Aad^co^+(A + E)bdr\co(Yj

Aadgling —(A-f-B)A/j)sinj)

(A—{—B—b C)dt

(A-f-B—(-C) dt

Coroll. 6.

ig 4 Conservatio virium vivarum ex sollicitationibusmomentaneis facile colligitur. Cum enim summa virium2 2 2 2 2 2A dp -\~Adx -\-Edq -4-Biy ->rCdr -t-C d&

2 Adpddp , 2 Adxddxerit ejus differentiate ——

2 Bdydddy 2 Qdrddy

vivarum sit

-+■

di 1iCdzddz

zBdqdd\q~?

m o.

ri? ' dd

_ [ P(i/psin£+sifo,'cos£— dqfm £— dy cos£)

1 Q(^sint) f</ycos»l—^‘sin») — -ircos»))

Cum'enim sit - — ? : ~a sin g, erit dq~~ dp ZZZ ad. sin^Eule ri Opuscula Tom. ///. O et