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If the axes are rectangular, the direction-ratios become direction-cosines, so that X1 + ~s2 + vi = I, whence R2 = X1 + ~2 + Z2.
(Nxe, fri) 3 / 2 =(x+1) 1 / X2, X1 _ =ax 4 +2ax 3 =3(a+b)x 2 +2bx =b, X2 N3= - 8(a+b), weight W, and under no force the C.G.
( p 4) h 4PP-4 - where X1 - 12, X2= 240, X 3 = Tit/, X 4 - S840, X 5 - $37 g 2,
X1, X 2, u1, /22 being as usual the coefficients of substitution, let x1a ?
Yi at Ai may be replaced by a force Yi at 0 together with a couple x1 Y1.
Let these projections be denoted algebraically by x1, xi,.
Or ~(Y) along Oy, and a couple (x1Yiy1Xi) + (x1 YfyfXI) +
The force X1 at Pi with K -
Let (x1, yi), (xf, y,),.