Question

A block of tackle system of pulley consisting of 5 pulleys is used to raise a mass of 25kg through a vertical distance of 40cm at a steady rate. If the effort is equal to 60N, determine:
a) The distance moved by the effort.
b) The work done by the effort in lifting the load.
c) The loss in energy involved in operating the machine.

Answer 1

a) effort distance is five times load distance

b) effort distance multiplied by effort (60N)

c) lost energy = effort work - load work
... load work = m * g * h