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Two ulu s a ttconnecteu by string het passes uver d massless, fictiuriless pulley, as sti n in he ngure. Block A with rndss la 2.00 kg rests on d tarno measuring 3.นิ m verü ally dnd 4.0 m horizon dll . Block B herls vertically below the pulley. No e het You can solve this exercise entirely using forces and the constant-acceleration equations, but see it you can apply energy ideas instead. Use g 10 ms, When the system is released from rest, block A accelerotes up the slope and block B acoelerates straight down, When lock B has fallen through a height 2.0 m its epeed is6.00 m/s 3.0 m 4.0 m (a) Assuming that no m ction is acting on block A, Whet is the mass or block B? kg () I, Instead, there Is friction acting on block A, with a coetriclent of kInedc friction of 5/8, what is the mass of block B? kg

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