Large and Small Diameter Lifting Pulley / Drums Equation and Calculator

A simple pulley and drum may be used to lift a weight by applying a force with a rope which is wrapped about he outer diameter of one of the diameters. F : W = r : R W = (F x R)/r F x R = W x r R = (W x r)/F F = (F x R)/R r = (F x R)/W

Where:

W = Unknown weight (lbs, N)
F = Applied force (lbs, N)
R = Radius large diameter (in, mm)
r = Radius small diameter (in, mm)

 Pulley Lifting Calculator Force Weight W (Lbs, N) = Radius r (in, mm) = Radius R (in, mm) = Result Force F (Lbs, N) = Pulley Lifting Calculator Weight Force F (Lbs, N) = Radius r (in, mm) = Radius R (in, mm) = Result Weight W (Lbs, N) = Pulley Lifting Calculator Radius R Weight W (Lbs, N) = Radius r (in, mm) = Force f (in, mm) = Result Radius R (in, mm) = Pulley Lifting Calculator Radius r Force F (Lbs, N) = Radius R (in, mm) = Weight W (in, mm) = Result Radius r (in, mm) =   Membership Register | Login   Home Engineering Book Store Engineering Forum Excel App. Downloads Online Books & Manuals Engineering News Engineering Videos Engineering Calculators Engineering Toolbox GD&T Training Geometric Dimensioning Tolerancing DFM DFA Training Training Online Engineering Advertising Center Copyright Notice 