How to calculate the net force required for the system of pulleys to move at a given acceleration?

Question

Figure shows a system of 3 blocks of 5 kg mass each. Find the value of external force F required to move the block A at acceleration #5#m/#s^2#. Take all surfaces smooth and g = #10 m#/#s2#

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Answer 1 · 2018-03-18T10:59:27

#200N#

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here the pulley on the mass #A# also applies force of #T# on horizontal as well as vertical direction as shown.