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Consider the Atwood machine used in the experiment. The 70g right pan, made 10g heavier than the left pan, takes 2.8s to descend to the bottom platform, 1.2m below the top platform. Mass of the pulley=187.15 g. What is the %error in the acceleration of the pans? Choose the best answer.

a. 10%

b. 20%

c. 30%

d. 40%

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