TM 115 Forces in a crane jib
TM 115 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. Weights are applied to the crane jib. The occurring bar forces are indicated by integrated spring balances.
- vectoral handling of forces in a planar central force system
Spring balance for tensile forces
- tensile force: 0…50N
- graduation: 0,5N
Spring balance for compressive forces
- pressure force: 0…50N
- graduation: 1N
Weights
- 1x 1N (hanger)
- 4x 1N
- 1x 5N
- 4x 10N
- tensile and compressive forces in a planar central force system based on the example of a crane jib
- integrated spring balances in the bars
- max. load on crane jib 50N
- stainless steel retaining bar
- sturdy metal base plate
- handles to aid transportation
- storage system to house the components
- graphical breakdown of forces by force parallelogram
- determination of the bar forces onvarious jib forms
- comparison of: measuring result – calculation – graphical method