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(9 kg)[(9 kg)(0.90 m)/(37 kg)]^2 + (28 kg)[0.90 m - (9 kg)(0.90 m)/(37 kg)]^2
(9 kg)[(9 kg)(0.90 m)/(37 kg)]^2 + (28 kg)[0.90 m - (9 kg)(0.90 m)/(37 kg)]^2
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