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please! help me understand how to solve this problem.

Assume the end of the cable at A is pulled down with at speed of 10 m/s. 0 to 10 mls in 5 sec Find: moes of block E = me = 10
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SE Sc Position- co-OSidinat eguation 2SB SA 1 Se - Se) Sc SE - Sc) = SE Eliminaing Se and Se SA + 8 SE Taking dime derivative

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