Engineering Statics

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Engineering Statics Chapter Exercises
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Truss: zero force members 16 Nov 2025, 2:47 p.m.
Chapter 6 Exercises 15 Nov 2025, 8:31 p.m.
Machine: Vice grips 15 Nov 2025, 2:03 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. 

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William Haynes on Equilibrium of a rigid body: truss 2 years, 8 months 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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William Haynes on 13. Equilibrium of Rigid Bodies 2 years, 8 months ago

Saved a checkpoint:

Student reports that when A_y = 0, answer is not marked correct.

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William Haynes on Equilibrium of a particle: four forces 2 years, 8 months ago

Gave some feedback: Has some problems

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William Haynes on Equilibrium of a particle: four forces 2 years, 8 months ago

Saved a checkpoint:

Problem is throwing "undefined is not an object (evaluating 'original_result.states.mark')" when answer is submitted.  Resubmitting it works.  

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William Haynes on Equilibrium of a particle: four forces 2 years, 8 months ago

Saved a checkpoint:

No bug, student misinterpreted the question leading to his problem

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William Haynes on Equilibrium of a particle: four forces 2 years, 8 months ago

Saved a checkpoint:

Bug in marking algorithm reported

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William Haynes published Friction: Range of values 1 2 years, 9 months ago

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William Haynes published Friction: Range of values 2 2 years, 9 months ago

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William Haynes on Friction: Range of values 2 2 years, 9 months ago

Gave some feedback: Ready to use

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William Haynes on Friction: Range of values 1 2 years, 9 months ago

Gave some feedback: Ready to use

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William Haynes published Friction: Determine direction of $F_f$ 2 years, 9 months ago

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William Haynes on Friction: Determine direction of $F_f$ 2 years, 9 months ago

Gave some feedback: Ready to use

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William Haynes published Friction: block on block 2 2 years, 9 months ago

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William Haynes on Friction: block on block 2 2 years, 9 months ago

Gave some feedback: Ready to use

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William Haynes published Friction: block on block 1 2 years, 9 months ago

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William Haynes on Friction: block on block 1 2 years, 9 months ago

Gave some feedback: Ready to use

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William Haynes on Chapter 9 Exercises 2 years, 9 months ago

Saved a checkpoint:

Added 5 Friction problems from Vladimir Vingoradov

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William Haynes on Friction: Range of values 2 2 years, 9 months ago

Saved a checkpoint:

Replaced diagram with Geogebra diagram,  Changed answers to use Quantities extension.

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William Haynes on Friction: block on block 1 2 years, 9 months ago

Saved a checkpoint:

Redrew Diagram, changed to use Quantities Extension

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William Haynes on Machine: Pliers 2 years, 9 months ago

Gave some feedback: Ready to use

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