Figure 13-46 shows four particles, each of mass 50.0 g, thatform a square with a

Question

Figure 13-46 shows four particles, each of mass 50.0 g, thatform a square with an edge length of d = 0.700 m. Ifd is reduced to 0.200 m, what is the change in thegravitational potential energy of the four-particle system? I've looked at the version from cramster and I am stillgetting the incorrect answer! can you tell me what I am doingwrong? My Work (from cramster) U=-Gm2 ((2) +4) (1/d1-1/d)     =-(6.67E-11)(.05)2((2)+4)[(1/.2)-(1/.7)]    =-3.00E-12 J Figure 13-46 shows four particles, each of mass 50.0 g, thatform a square with an edge length of d = 0.700 m. Ifd is reduced to 0.200 m, what is the change in thegravitational potential energy of the four-particle system? I've looked at the version from cramster and I am stillgetting the incorrect answer! can you tell me what I am doingwrong? My Work (from cramster) U=-Gm2 ((2) +4) (1/d1-1/d)     =-(6.67E-11)(.05)2((2)+4)[(1/.2)-(1/.7)]    =-3.00E-12 J

Explanation / Answer

I got the same formula. Maybe you don't take enough significant figures Try -3.22 E-12 or -3.2 E-12

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