A 500 - 1 g block sits in the middle of a balance strings, Ask an Expert

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A 500 +/- 1 g block sits in the middle of a balance. Strings with small mass hangers are attached. The mass hanger abovethe block has a total mass of 250 +/- 1g (Vertical tension force Iassume) . The hanger on the left has a mass of 50 +/- 0.5 g.The balance reads 249.7 +/- 0.1 g (a pulling force i assume).

What would Newton's second law equation be for the aluminum block?

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