Questions tagged [moments]
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Force required to rotate an object on a plane - moment of inertia?
I have a rectangular shape with uniform mass, approx 6m x 1m. It rotates around an axis in the centre of its width but 1m from one end. The axis has some friction but this is not known.
What I need ...
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Calculating the moments due to reaction forces on a bent beam
I am trying to solve the following problem:
EXAMPLE 2.10
Determine the reactions on the beam in Fig. 2–30a. Assume $B$
is a pin and the support at $B$ is a roller (smooth surface).
...
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Flexural modulus for a beam fixed at one end
For a beam supported at both ends with a mass in the middle, the flexural modulus is given by:
$$E_b = \frac{F L^3}{48I d}$$
with I as the area moment
$$I = \frac{1}{12}wh^3$$
How does the ...
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Shear Stress / Flexure Stress Formulas / Tables
Is there something similar to the Section Modulus in the Flexure Formula
$$\rho_{max} = \dfrac{M_{max}}{S}$$
where $S = \dfrac{I}{c}$ for shear stress formula?
So in
$$\tau_{max} = \dfrac{VQ}{IT}$$...
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Different measured strain in beam experiencing pure bending
I have a beam experiencing a pure bending moment. The setup is similar to this image from these lecture notes (with different values).
Using the flexure formula, we can determine that the stress (and ...
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Buckling of a cantilever with midway support
I'm trying to understand the implications for buckling and column sizing in the drawings below.
A 3000mm 120x60 RHS steel column supports a 350mm horizontal steel beam. The column base and right side ...
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Determine the moment of inertia of a filled circular sector
Does anyone know how to determine the moment of inertia of the filled circular sector shown below?
Apparently I have to use $dA=r\ d\theta\ dr$, $y= r\sin(\theta)$ and end up getting $I_x=\frac{r^4}{...
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