Question three solid spheres of lead each of a mass 98 kg, Ask an Expert

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Question: Three solid spheres of lead, each of a mass 9.8 kg, are located at three corners of a square with side lengths of 50cm. A small object is released at the forth corner. Considering only the gravitational forces among the four objects,

Part A: Determine the magnitude and direction of the acceleration of the smaller object when it is released?

I want you to explain the physics in this problem.

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