設(shè)質(zhì)點(diǎn)系的質(zhì)量為mi(i=1, 2, …, n),坐標(biāo)為(xi, yi, zi),在第i個(gè)質(zhì)點(diǎn)上的作用力為Fi,它有勢函數(shù)U,U只依賴于質(zhì)點(diǎn)的坐標(biāo),即U=U(x1, y1, z1; x2, y2, z2; …; xn, yn, zn)(1.13)故作用力Fi為保守力場,具有關(guān)系Fxi=-,Fyi=-,Fzi=- (i=1 (共 1756 字) [閱讀本文] >>