A pulley system has 5 pulleys in all, 2 in the movable block and 3 in the fixed block, such that effort is applied in the upward direction and a load of 60 kgf is attached to the movable block. (i) what is the velocity ratio of pulley system ? (ii) assuming pulley system as ideal one, what is the mechanical advantage ? (iii) what is the magnitude of effort applied? (iv) if the pulley system is not ideal but is 75 % efficient what is the effort required?
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