EXPERIMENT NO.4 To study Equilibrium of Parallel Forces Using Simply Supported Beam Reactions.

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Experiment with reading #simplysupportedbeam
To study Equilibrium of parallel forces using simply supported beam reactions.

In a beam apparatus, a horizontal wooden beam of size 40mm x40mm x 1000mm with grooves at every 50mm along its length is attached with a wooden scale showing distances in centimetres. This beam is mounted in simply supported condition on two force measuring circular dials at its two ends, which can measure force up to 10 kg.
As the beam is loaded with different loads on hangers at different locations on the beam, the dials will show the reaction of the simply supported beam at the respective supports.
Beam is a structural member usually horizontal and straight provided to carry loads that are vertical or inclined to its axis. A simply supported beam is one whose ends are resting freely on the supports that provide only vertical reactions.

Simply supported beam becomes unstable if it is subjected to oblique or inclined loads. When simply supported beam is subjected to only vertical loads, its FBD forms a system of parallel forces in equilibrium. Conditions of equilibrium summation of Fy 0 and summation of M = 0 can be applied to determine the support reactions analytically.


PROCEDURE:
1. Organize the physical set up of experiment study it.
2. Measure span of beam.
3. Note down initial reading (reactive forces) at support A & B.
4. Apply loads P1, P2 etc. (active forces) at different positions & measure the distances d1, d2, respectively from support A & note it.
5. Take final readings of reactive forces at supports A & B after loading & note down in observation table.
6. Calculate support reaction at support A & B for each readings at each support.
7. Repeat the procedure for three to four sets of loading.