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/ Scientific American: The Amateur Scientist / Scientific American - The Amateur Scientist (Tinker's Guild)(2000).iso / amsci01 / tblib / gravitation / figure4a.jpg

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Joint Photographic Experts Group Image  |  2000-09-11  |  47KB  |  733x446  |  8-bit (256 colors)

Labels: bulletin board | door | sky | window
OCR: TITLE grav2 pde} 'Earth-Moon Gravitation Zoomed' DEFINITIONS units: m, {.6 84e8 Lx=d Ly= T1= 6.37e6 r2= 1.74e6 [Radii m1 98e24 m2 35e22 Masses U= 67e-11* [m 1/sqrtx^2+y^2+ m2/sgrtx 2+y-d^2] gx= -dx(U) gy= -dy(U) Field strength gm= sqrt(gx^2+gy^2) Magnitude of g} BOUNDARIES region start( (-Lx,-Ly14) line to Lx-Ly/4toLx 3/4*Ly) to-Lx 3/4*Ly) to finish start(r1,0) Cut-out for the Earth arc to 0-1 to r1,0to0,r1 to finish start(r2,d) Cut-out for the Moon

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