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4. [ 17 points] A ball is attached to a horizontal cord of length 110 cm, A peg is located a distance h-80cm directly below t
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Concept: use work energy principle to find the final speed finding the vertical displacement first in the downward direction

When its at top of círcularpath, its vencaL displacement is, d:h-Y h-イ Na 乙***************************************************************************************************
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