88 results for "moment".
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Question in Engineering Statics
Find moment of inertia and radius of gyration for a built-up beam made of two channels and two plates.
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Question in Engineering Statics
Find moment of inertia of a composite shape consisting of a rectangle and two triangles with respect to the x-axis. Shapes rest on the x-axis so the parallel axis theorem is not required.
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Question in Engineering Statics
Find centroidal moments of inertia and radius of gyration for a beam composed of two angle sections forming a box beam.
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Question in Engineering Statics
Find the centroid and the centroidal moments of inertia for a beam composed of a flat plate and two angle sections.
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Question in Engineering Statics
Find the centroidal moment of inertia of a sideways T shape. This requires first locating the centroid, then applying the parallel axis theorem.
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Question in Engineering Statics
Use a table of properties to find the Area Moment of inertia for simple shapes: rectangle, triangle, circle, semicircle, and quarter circle.
The parallel axis theorem is not required for any of these shapes. One situation requires subtracting a triangle from a rectangle however.
Distinguish between centroidal and non-centroidal moments of inertia.
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Question in Engineering Statics
Calculate reactions and shear and bending moment at a point for an overhanging beam with a constant or uniformly varying distributed load.
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Question in Engineering Statics
An A-frame structure supporting a force or a moment. One leg is a two force body.
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Question in Francis's workspace
Euler-Bernoulli simply supported beam bending example with point force and moment.
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Question in Christian's workspace
A quick implementation of certainty-based marking: the student's score depends on how they rated their certainty in their answer before submission.
Because Numbas doesn't allow negative marking at the moment, scores are shifted upwards, so a high certainty incorrect answer scores 0, and a high certainty correct answer scores full credit.
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Question in CHY1201 - SpectroscopyThe reduced masses are pre-calculated for this question and included in a list. It would be more elegant to program Numbas to permute atoms together to generate diatomic molecules while constraining the permutations to those which are chemically/physically reasonable, so as to allow calculation of each reduced mass directly from the atomic masses- but organising this with high computational efficiency might be a significant programing task (add to "to do" list).
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Question in CHY1201 - SpectroscopyThe reduced masses are pre-calculated for this question and included in a list. It would be more elegant to program Numbas to permute atoms together to generate diatomic molecules while constraining the permutations to those which are chemically/physically reasonable, so as to allow calculation of each reduced mass directly from the atomic masses- but organising this with high computational efficiency might be a significant programing task (add to "to do" list).
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Question in CHY1201 - SpectroscopyThe reduced masses are pre-calculated for this question and included in a list. It would be more elegant to program Numbas to permute atoms together to generate diatomic molecules while constraining the permutations to those which are chemically/physically reasonable, so as to allow calculation of each reduced mass directly from the atomic masses- but organising this with high computational efficiency might be a significant programing task (add to "to do" list).
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Question in How-tos
The student has to compute $a^b$ and $b^a$, then decide which of the two is bigger.
This question shows how to set up a custom marking matrix for the "choose one from a list" part, based on values used elsewhere in the question. It could use adaptive marking to use the student's incorrect values for the comparison, but doesn't at the moment.
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Question in Keith's workspace
Determine the reactions supporting a cantilever beam carrying concentrated forces and moments.
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Question in Mechanics
Determine the reactions supporting a cantilever beam carrying concentrated forces and moments.
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Question in Katrin's workspace
Write expressions for the moment of inertia of simple shapes about various axes.
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Question in Ann's workspace
Find moment of inertia of a shape which requires the use of the parallel axis theorem for a semicircle.
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Question in Sequences and Series
This question tests to see if students can recognise an alternating series and based on the alternating series test and the divergence test determine if it is convergent or divergent.
At the moment there is no example included with $b_n\rightarrow 0$ which isn't eventually monotonically convergent.
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Question in Newcastle University Biomechanics
Find the magnitude of the momentum of some objects, given mass and speed. Apply the formula $\rho = mv$.
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Question in Maths Support Wiki - Mechanics
Find the magnitude of the momentum of some objects, given mass and speed. Apply the formula $\rho = mv$.
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Question in John's workspace
Collisions question involving principle of conservation of momentum.
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Question in John's workspace
Finding speeds and impulses
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Question in Anders's workspace
Finding speeds and impulses
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Question in Maths Support Wiki - Mechanics
Collisions question involving principle of conservation of momentum.
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Question in Maths Support Wiki - Mechanics
Finding speeds and impulses
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Question in Maths Support Wiki - Mechanics
Use the Impulse-Momentum principle to find the change in speed of an object after a constant force is applied for a given period of time.
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Exam (5 questions) in Maths Support Wiki - Mechanics
To be used on the Mechanics wiki page under the Dynamics section, impulse and momentum page. Questions about impulse, momentum and collisions.