Question

A cantilever beam loaded with udl throughout, the maximum shear force occurs at____Single choice.

(1 Point)

Free end

Fixed end

At centre

At point of contraflexure​

Answer 1

Answer:

The Correct answer is option B

Explanation:

• The point of contraflexure is the point at which the sign of the bending moment changes, from positive to negative or vice versa.
• The bending moment is 0 at the point of contraflexure.
• To determine the location of the point of contraflexure, we must build a bending moment diagram. The point of contraflexure is where the diagram meets the zero line, i.e. where the sign changes.
• Because it possesses fixity on just one side and the system's dominant mode is the first mode.
• If you load a cantilever beam anywhere along its length, you will only obtain one sort of deflected form. That is exactly what you envisaged in your brain. Move the load forward and backward, but the deflection profile of the beam will remain constant. It will not alter anyway. Of course, if you apply an extra load in the opposite direction as the first, you will get a different profile. But we're only discussing the most basic situation for now. The deflected shape will resemble:
• Repeat with any other beam. Apply loads to a simply supported beam at various positions along its length. There will be a lot of diversity in deflected form. Consider a guitar string as an example. When you pluck the string in different places, you will hear varied sounds as distinct higher mode frequencies begin to contribute.
• When it comes to cantilever beams, their dynamic nature is dominated by the system's fundamental first mode due to its one point fixity. When you utilise the rotating spring equation, you will get a fairly close result for the system's natural frequency. This is the only reason why a cantilever beam is called a beam.

Reference Link

• https://brainly.in/question/38020956
• https://brainly.in/question/8570698