85. We use m1for the 20 kg of the sphere at (x1,y1) = (0.5, 1.0) (SI units understood), m2for the 40 kg of the sphere at (x2,y2) = (−1.0,−1.0), and m3for the 60 kg of the sphere at (x3,y3) = (0, −0.5). The mass of the 20 kg object at the origin is simply denoted m. We note that 121.25,2rr==, and r3= 0.5 (again, with SI units understood). The force nFGthat the nthsphere exerts on mhas magnitude 2/nnGm m rand is directed from the origin towardsmn, so that it is conveniently written as
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.