Question

Diagram alongside show a pulley system when a load of 30kgf is attached to a movable block.

 

(a) What is the velocity ratio of pulley system ?

(b) What is the mechanical adyantage of pulley system assuming it is ideal ?

(c) What is the magnitude of effort applied ?

(d) If the pulley system is not ideal and is 60 % efficient, what is the effort required ?

Answer 1

L = 3 kgf

If free end of string is pulled up by the effort through 3d, then the load is raised up through a distance d