Vectoral handling of forces in a planar central force system 
Tesca Forces in a Crane Jib 
represents a planar central force system in which multiple forces act on a single point of application. Based on the example of a crane jib, forces are determined graphically and experimentally: resultant cable force, tensile force, compressive force. The directions and magnitudes of the forces are determined graphically by way of a  force parallelogram. 
A bar of adjustable length and a chain make up the crane jib, which is attached by adjustable clamp elements to a retaining bar. A variety of jib forms can be created. Loads are applied to the crane jib. The occurring bar forces are indicated by integrated spring balances. 

Specifications
Tensile and compressive forces in a planar central force 
system Based on the example of a crane jib 
Various jib forms possible
Integrated spring balances in the bars 
Max. Load on crane jib 50n 
Loading with weights set, up to 50n 
Steel weights, surfaces galvanized 
Stainless steel retaining bar 
Sturdy metal frame 
Handles to aid transportation 
Storage system to house the components 

Technical Specifications
Spring balance for tensile forces 
      -     Tensile force: 0...50N, graduations 0,5N 
Spring balance for compressive forces 
      -     Pressure force: 0...50N, graduations 1N 
Weight set 
      -     1x 1N (hanger) 
      -     4x 1N 
      -     1x 5N 
      -     4x 10N 

Experiments

1. Graphical breakdown of forces by force parallelogram 
2. Determination of the bar forces on various jib forms 
3. Comparison of measurement result - calculation - Graphical method 

Scope of Delivery
1 experimental unit 
2 spring balances 
1 set of weights 
1 storage system with foam inlay 
1 set of instructional material