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Four Particles, Each with Mass M, Are Arranged Symmetrically About \uparrow

question 55

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Four particles, each with mass m, are arranged symmetrically about the origin on the x axis.A fifth particle, with mass M, is on the y axis.The direction of the gravitational force on M is:  Four particles, each with mass m, are arranged symmetrically about the origin on the x axis.A fifth particle, with mass M, is on the y axis.The direction of the gravitational force on M is:   A)  \uparrow  B)  \downarrow  C)  \leftarrow  D)  \rightarrow  E)  none of these directions


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