Frame: Free Body Diagrams

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William Haynes

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William Haynes

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Ready to use

6 years ago

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William Haynes 3 years, 7 months ago

Saved a checkpoint:

Fixed problem with marking algorithm. Removed Javascript function to build marking matrix.

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William Haynes 3 years, 7 months ago

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revised

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William Haynes 6 years ago

Created this.

Name	Status	Author	Last Modified
Frame: Free Body Diagrams	Ready to use	William Haynes	06/10/2021 01:00
Ian's copy of Frame: Free Body Diagrams	draft	Ian Jeavons	03/06/2019 11:40
Katrin's copy of Frame: Free Body Diagrams	draft	Katrin Thomson	03/06/2019 11:53
Shivendra's copy of Frame: Free Body Diagrams	draft	Deactivated user	05/06/2019 18:48
Free Body Diagram 1	Ready to use	William Haynes	06/10/2021 00:47
Free Body Diagram 2	Ready to use	William Haynes	06/10/2021 00:42

There are 4 other versions that do you not have access to.

Question statement

Identify the errors (if any) in the student's free body diagrams.

{image('resources/question-resources/'+this['filename'])}

(#{index}. Click image to enlarge. )

Give any introductory information the student needs.

			Name	Type	Generated Value

fbds	list	List of 44 items
this	dict	Dictionary with 2 entries
mistakes	list	[ safe("No errors") ]
choices	list	List of 12 items
index	integer	17
matrix	list	List of 12 items

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
[
    {
        "filename": "fbd-0.png",
        "errors": [
            "Missing arrowheads",
            "Extra forces or moments",
            "Inconsistent forces at C"
        ]
    },
    {
        "filename": "fbd-2.png",
        "errors": [
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-3.png",
        "errors": [
            "Missing forces or moments",
            "Incorrect line of action"
        ]
    },
    {
        "filename": "fbd-7.png",
        "errors": [
            "Inconsistent forces at C",
            "Incorrect line of action",
            "Inconsistent forces at B",
            "Missing forces or moments"
        ]
    },
    {
        "filename": "fbd-6.png",
        "errors": [
            "Extra forces or moments",
            "Inconsistent forces at C",
            "Missing or incorrect labels"
        ]
    },
    {
        "filename": "fbd-4.png",
        "errors": [
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-5.png",
        "errors": [
            "No errors"
        ]
    },
    {
        "filename": "fbd-16.png",
        "errors": [
            "Inconsistent forces at B",
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-17.png",
        "errors": [
            "Extra forces or moments",
            "Incorrect line of action",
            "Inconsistent forces at B",
            "Inconsistent forces at C",
            "Inconsistent forces at D"
        ]
    },
    {
        "filename": "fbd-29.png",
        "errors": [
            "Inconsistent forces at B",
            "Missing forces or moments"
        ]
    },
    {
        "filename": "fbd-15.png",
        "errors": [
            "Inconsistent forces at A",
            "Inconsistent forces at C",
            "Missing forces or moments",
            "Extra forces or moments",
            "Incorrect line of action"
        ]
    },
    {
        "filename": "fbd-14.png",
        "errors": [
            "No errors"
        ]
    },
    {
        "filename": "fbd-28.png",
        "errors": [
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-10.png",
        "errors": [
            "No errors"
        ]
    },
    {
        "filename": "fbd-38.png",
        "errors": [
            "Inconsistent forces at A",
            "Inconsistent forces at C",
            "Missing forces or moments",
            "Inconsistent forces at D"
        ]
    },
    {
        "filename": "fbd-39.png",
        "errors": [
            "Inconsistent forces at A",
            "Inconsistent forces at C",
            "Inconsistent forces at D",
            "Incorrect line of action"
        ]
    },
    {
        "filename": "fbd-11.png",
        "errors": [
            "Extra forces or moments",
            "Inconsistent forces at B"
        ]
    },
    {
        "filename": "fbd-13.png",
        "errors": [
            "No errors"
        ]
    },
    {
        "filename": "fbd-12.png",
        "errors": [
            "Missing forces or moments",
            "Incorrect line of action",
            "Missing or incorrect labels"
        ]
    },
    {
        "filename": "fbd-37.png",
        "errors": [
            "Inconsistent forces at A",
            "Incorrect line of action",
            "Inconsistent forces at C"
        ]
    },
    {
        "filename": "fbd-36.png",
        "errors": [
            "Inconsistent forces at A",
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-22.png",
        "errors": [
            "Missing or incorrect labels"
        ]
    },
    {
        "filename": "fbd-34.png",
        "errors": [
            "Missing forces or moments",
            "Inconsistent forces at B"
        ]
    },
    {
        "filename": "fbd-20.png",
        "errors": [
            "Missing forces or moments",
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-21.png",
        "errors": [
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-35.png",
        "errors": [
            "No errors"
        ]
    },
    {
        "filename": "fbd-31.png",
        "errors": [
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-25.png",
        "errors": [
            "No errors"
        ]
    },
    {
        "filename": "fbd-19.png",
        "errors": [
            "Missing forces or moments",
            "Incorrect line of action",
            "Inconsistent forces at B",
            "Extra forces or moments",
            "Missing or incorrect labels"
        ]
    },
    {
        "filename": "fbd-18.png",
        "errors": [
            "Inconsistent forces at A",
            "Inconsistent forces at C",
            "Missing or incorrect labels"
        ]
    },
    {
        "filename": "fbd-24.png",
        "errors": [
            "Extra forces or moments",
            "Inconsistent forces at B"
        ]
    },
    {
        "filename": "fbd-26.png",
        "errors": [
            "Inconsistent forces at C",
            "Incorrect line of action",
            "Inconsistent forces at B"
        ]
    },
    {
        "filename": "fbd-32.png",
        "errors": [
            "Extra forces or moments",
            "Inconsistent forces at B"
        ]
    },
    {
        "filename": "fbd-27.png",
        "errors": [
            "Missing forces or moments",
            "Inconsistent forces at C",
            "Inconsistent forces at A",
            "Incorrect line of action"
        ]
    },
    {
        "filename": "fbd-40.png",
        "errors": [
            "Extra forces or moments",
            "Incorrect line of action",
            "Missing forces or moments"
        ]
    },
    {
        "filename": "fbd-8.png",
        "errors": [
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-9.png",
        "errors": [
            "Inconsistent Moment",
            "Incorrect line of action",
            "Missing forces or moments",
            "Inconsistent forces at B"
        ]
    },
    {
        "filename": "fbd-41.png",
        "errors": [
            "force with known direction shown as components",
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-43.png",
        "errors": [
            "Inconsistent forces at C",
            "Inconsistent forces at B",
            "Missing forces or moments",
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-42.png",
        "errors": [
            "No errors"
        ]
    },
    {
        "filename": "fbd-46.png",
        "errors": [
            "Inconsistent forces at D",
            "Inconsistent forces at C",
            "Inconsistent forces at A",
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-47.png",
        "errors": [
            "Missing or incorrect labels",
            "Incorrect line of action"
        ]
    },
    {
        "filename": "fbd-45.png",
        "errors": [
            "Extra forces or moments"
        ]
    },
    {
        "filename": "fbd-44.png",
        "errors": [
            "Missing arrowheads"
        ]
    }
]

Description

array containing problem image file name and cooresponding errors

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `list`

[ [ "filename": safe("fbd-0.png"), "errors": [ safe("Missing arrowheads"), safe("Extra forces or moments"), safe("Inconsistent forces at C") ] ], [ "filename": safe("fbd-2.png"), "errors": [ safe("Extra forces or moments") ] ], [ "filename": safe("fbd-3.png"), "errors": [ safe("Missing forces or moments"), safe("Incorrect line of action") ] ], [ "filename": safe("fbd-7.png"), "errors": [ safe("Inconsistent forces at C"), safe("Incorrect line of action"), safe("Inconsistent forces at B"), safe("Missing forces or moments") ] ], [ "filename": safe("fbd-6.png"), "errors": [ safe("Extra forces or moments"), safe("Inconsistent forces at C"), safe("Missing or incorrect labels") ] ], [ "filename": safe("fbd-4.png"), "errors": [ safe("Extra forces or moments") ] ], [ "filename": safe("fbd-5.png"), "errors": [ safe("No errors") ] ], [ "filename": safe("fbd-16.png"), "errors": [ safe("Inconsistent forces at B"), safe("Extra forces or moments") ] ], [ "filename": safe("fbd-17.png"), "errors": [ safe("Extra forces or moments"), safe("Incorrect line of action"), safe("Inconsistent forces at B"), safe("Inconsistent forces at C"), safe("Inconsistent forces at D") ] ], [ "filename": safe("fbd-29.png"), "errors": [ safe("Inconsistent forces at B"), safe("Missing forces or moments") ] ], [ "filename": safe("fbd-15.png"), "errors": [ safe("Inconsistent forces at A"), safe("Inconsistent forces at C"), safe("Missing forces or moments"), safe("Extra forces or moments"), safe("Incorrect line of action") ] ], [ "filename": safe("fbd-14.png"), "errors": [ safe("No errors") ] ], [ "filename": safe("fbd-28.png"), "errors": [ safe("Extra forces or moments") ] ], [ "filename": safe("fbd-10.png"), "errors": [ safe("No errors") ] ], [ "filename": safe("fbd-38.png"), "errors": [ safe("Inconsistent forces at A"), safe("Inconsistent forces at C"), safe("Missing forces or moments"), safe("Inconsistent forces at D") ] ], [ "filename": safe("fbd-39.png"), "errors": [ safe("Inconsistent forces at A"), safe("Inconsistent forces at C"), safe("Inconsistent forces at D"), safe("Incorrect line of action") ] ], [ "filename": safe("fbd-11.png"), "errors": [ safe("Extra forces or moments"), safe("Inconsistent forces at B") ] ], [ "filename": safe("fbd-13.png"), "errors": [ safe("No errors") ] ], [ "filename": safe("fbd-12.png"), "errors": [ safe("Missing forces or moments"), safe("Incorrect line of action"), safe("Missing or incorrect labels") ] ], [ "filename": safe("fbd-37.png"), "errors": [ safe("Inconsistent forces at A"), safe("Incorrect line of action"), safe("Inconsistent forces at C") ] ], [ "filename": safe("fbd-36.png"), "errors": [ safe("Inconsistent forces at A"), safe("Extra forces or moments") ] ], [ "filename": safe("fbd-22.png"), "errors": [ safe("Missing or incorrect labels") ] ], [ "filename": safe("fbd-34.png"), "errors": [ safe("Missing forces or moments"), safe("Inconsistent forces at B") ] ], [ "filename": safe("fbd-20.png"), "errors": [ safe("Missing forces or moments"), safe("Extra forces or moments") ] ], [ "filename": safe("fbd-21.png"), "errors": [ safe("Extra forces or moments") ] ], [ "filename": safe("fbd-35.png"), "errors": [ safe("No errors") ] ], [ "filename": safe("fbd-31.png"), "errors": [ safe("Extra forces or moments") ] ], [ "filename": safe("fbd-25.png"), "errors": [ safe("No errors") ] ], [ "filename": safe("fbd-19.png"), "errors": [ safe("Missing forces or moments"), safe("Incorrect line of action"), safe("Inconsistent forces at B"), safe("Extra forces or moments"), safe("Missing or incorrect labels") ] ], [ "filename": safe("fbd-18.png"), "errors": [ safe("Inconsistent forces at A"), safe("Inconsistent forces at C"), safe("Missing or incorrect labels") ] ], [ "filename": safe("fbd-24.png"), "errors": [ safe("Extra forces or moments"), safe("Inconsistent forces at B") ] ], [ "filename": safe("fbd-26.png"), "errors": [ safe("Inconsistent forces at C"), safe("Incorrect line of action"), safe("Inconsistent forces at B") ] ], [ "filename": safe("fbd-32.png"), "errors": [ safe("Extra forces or moments"), safe("Inconsistent forces at B") ] ], [ "filename": safe("fbd-27.png"), "errors": [ safe("Missing forces or moments"), safe("Inconsistent forces at C"), safe("Inconsistent forces at A"), safe("Incorrect line of action") ] ], [ "filename": safe("fbd-40.png"), "errors": [ safe("Extra forces or moments"), safe("Incorrect line of action"), safe("Missing forces or moments") ] ], [ "filename": safe("fbd-8.png"), "errors": [ safe("Extra forces or moments") ] ], [ "filename": safe("fbd-9.png"), "errors": [ safe("Inconsistent Moment"), safe("Incorrect line of action"), safe("Missing forces or moments"), safe("Inconsistent forces at B") ] ], [ "filename": safe("fbd-41.png"), "errors": [ safe("force with known direction shown as components"), safe("Extra forces or moments") ] ], [ "filename": safe("fbd-43.png"), "errors": [ safe("Inconsistent forces at C"), safe("Inconsistent forces at B"), safe("Missing forces or moments"), safe("Extra forces or moments") ] ], [ "filename": safe("fbd-42.png"), "errors": [ safe("No errors") ] ], [ "filename": safe("fbd-46.png"), "errors": [ safe("Inconsistent forces at D"), safe("Inconsistent forces at C"), safe("Inconsistent forces at A"), safe("Extra forces or moments") ] ], [ "filename": safe("fbd-47.png"), "errors": [ safe("Missing or incorrect labels"), safe("Incorrect line of action") ] ], [ "filename": safe("fbd-45.png"), "errors": [ safe("Extra forces or moments") ] ], [ "filename": safe("fbd-44.png"), "errors": [ safe("Missing arrowheads") ] ] ]

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