Simple Screw Jack Experiment. Duplex Screw Efficiency Apparatus.

Screw Jack Animation
Perform screw jack experiment
Details of simple screw jack, all parts, working principal, load, effort, MA, VR, efficiency, with application.
A jack screw, or screw jack, is a type of jack that is operated by turning a lead screw. It is commonly used to lift moderately heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable supports for heavy loads, such as the foundations of houses.
Engineering Mechanics Lab- Screw Jack Experiment
The apparatus is stood on a firm bench and a cord is wound around the periphery of the turntable. The free end of the cord is threaded over a pulley and then hangs vertically to accept the load hanger supplied. A set of calibrated weights is supplied which are suspended from the load hanger thus producing a known torque on the system. To adjust the experimental parameters further the calibrated weights can also be applied to the top surface of the turntable. A comprehensive instruction manual for lecturer and student, giving full details on apparatus assembly and operation as well as example results. All necessary assembly and operational tools are provided.