Elevator design,

Load $=(7$ people $)(75kg)=525kg$

Cabin moss $=350kg$

$40$:$1$ reduction rate

$V=1\frac{m}{s}(4$ stairs $)$ floors

counterweight mass $=(\frac{525}{2}+350)=612,5kg.$

Dionneter of pulley $=400m\frac{m}{l}$

Diameter of pulley $=400mm?$

Find braking torque of the motor, Factor of safety and all necessary values about it$.$ Through Calculations.