Engineering Statics - Numbas at mathcentre.ac.uk

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Moment Exploration: Engine Hoist	11 Mar 2024, 2:50 p.m.
Reactions for beam with uniformly varying load	1 Mar 2024, 10:48 p.m.
Friction: Range of values 2	23 Feb 2024, 8:39 p.m.
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Engineering Statics Homework Problems. Problems have dynamic Geogebra diagrams and use the quantities extension.

Many are included in Engineering Statics: Open and Interactive, a free, online textbook.

Project activity

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Cyril Crua commented on V-M 1: Concentrated forces 11 months, 2 weeks ago

Many thanks for these excellent resources. I think there may be an inconsistency in sign convention in this and other beam exercises, as the shear and moment signs don't seem to match those in http://engineeringstatics.org/VM_sign_convention.html

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William Haynes published Equivalent Force-couple system: Bracket 1 year ago

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William Haynes commented on 16. Equivalent Systems, Resultants 1 year ago

Added question: equivalent force couple system on bracket

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William Haynes on Equivalent Force-couple system: Bracket 1 year ago

Gave some feedback: Ready to use

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William Haynes created Equivalent Force-couple system: Bracket 1 year ago

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William Haynes on Equilibrium of a rigid body: beam and pulley 1 year ago

Saved a checkpoint:

Properly italicized variables, reformatted advise.

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William Haynes on Equilibrium of a rigid body: truss 1 year ago

Saved a checkpoint:

When b=2.8, h=4, B=2, C=5, F=4, E=3, then Ay = 0, but Numbas calculates it as Ay = -1.7763568394002505*10^(-15) and marks 0 wrong, because it calculates percent error to be 100 %

abs(0 - 0.00000000000002)/(0.00000000000002) = 1.

Added precround(Ay,6) in Marking settings to avoid this. I don't know how to fix the root cause.

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