Depression of cantilever

A cantilever is a rigid structural element, such as a beam or a plate, anchored at only one end to a (usually vertical) support from which it is protruding. Cantilevers can also be constructed with trusses or slabs. When subjected to a structural load, the cantilever carries the load to the support where it is forced against by a moment and shear stress.[1]

Cantilever construction allows for overhanging structures without external bracing, in contrast to constructions supported at both ends with loads applied between the supports, such as a simply supported beam found in a post and lintel system.

• Firstly, i use a wooden scale and get the relation of the depression from the unloaded position for various loads attached at a particular point on the scale and get the relation between the two and compare with the theoretically predicted relation. We can also get the Young’s modulus from this. We use a pin and a travelling microscope measurement to find the depression by subtracting the height from the unloaded reading on a travelling microscope

• Next, we can hang a plastic scale and repeat the same procedure to calculate the young’s modulus of the plastic scale.

• For the wooden scale the length of the scale was varied keeping the point of suspension to be same and a similar experiment was carried as before for various lengths to get the relation between the length of beam and the depression can be checked experimentally.

• Here, the point of suspension was varied for a particular length and the relation between length and the depression was to to be checked how the parameters are related to each other.

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