Four blocks A, B, C and D of equal mass ...

Four blocks A, B, C and D of equal mass are placed on the belt of conveyor at equal distances as shown. Mass of each block is 2 kg and distance between blocks (d) is 400 mm. Assume masses of rollers and conveyor are negligible. Friction is sufficient to prevent the slipping between blocks and belt. A constant force of 1000 N is applied parallel to the belt as shown. Neglect the radius of roller as compare to d. The magnitude of velocity of block B when it leave the roller at point 'T' is `10sqrt((7)/(alpha))m//s`. Find the value of `alpha`.

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