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Students Aaron, Barbara and Charles, are discussing the problem illustrated below: A sphere of mass M and a yoyo, also of mass M, are initially suspended from a frictionless, massless pulley and released from rest.
They disagree as to which, the sphere or the yoyo, reaches the ground first. Aaron concludes that it is the sphere, Barbara picks the yoyo, and Charles isn't sure but thinks that they will reach the ground at the same time.
Write a short essay, addressed to one of the three students, indicating the arguments that lead you to agree (or disagree) with that student's conclusion.



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