Y2Y0ZjUwNWExYjE3ZDA3ZGRhMmM3ZWQxNWJiZDdiNjlkNzI3MTJmZDAyNWM4NGNlZGZmYjQ4MDk0YWRkY2Q5ZA.msfhfrcx.eyJ1cmwiOiIvcGwvY291cnNlX2luc3RhbmNlLzIvaW5zdGFuY2VfcXVlc3Rpb24vNjY2LyIsImF1dGhuX3VzZXJfaWQiOiIxIn0
Skip to main content Accessibility guide
PrairieLearn Go home
  • XC 101, SectionA
  • Assessments
  • Gradebook
  • WS1
Load from disk
  • Dev User student
    View type
    ✓ Staff view staff ✓ Student view student ✓ Student view without access restrictions student
    Effective user
    Customize…
    Course Requests Settings Log out

Regenerate assessment instance

Warning: Regenerating the assessment instance will select a new set of questions from this assessment. Any progress on the current assessment instance will be lost.

Are you sure you want to regenerate the assessment instance?

Course staff: Regenerate your assessment instance to pick up changes to the assessment or to get a fresh set of questions.

WS1.2. Second law

Suppose the box $A$ is in equilibrium (at rest) in the position illustrated below when a force $F$ is applied at the cable. Box $A$ has mass $M_A = 8$ kg. Assume gravity equals to $10 \rm m / s^2$. Assume frictionless pulley. Determine the force in the cable required for this equilibrium configuration.

Cable force $=$ N
Additional attempts available with new variants

Correct answer

Worksheet 1

Assessment overview
Total points: 0/10
Score:
0%

Question WS1.2

Value: 5
All variants: Open (current)
Total points: — /5
Auto-graded question

This form is only for reporting errors in the question itself. Do not use this form if you just don't know how to answer the question.

Previous question

 Personal Notes

No attached notes

Attached files will be saved here for your reference. These files act as personal notes and can be used for your own review purposes. They are not used for grading.

Max file size: 10 MB

Attached personal notes will be saved here for your reference. These notes can be used for your own review purposes. They are not used for grading.

Staff information

Student details

Dev User
dev@example.com

Question

QID:
demo/demoNewton-page2
Title:
Second law

Variant

Started at:
2026-08-04 16:42:58 (CDT)
Duration:
0s
Show/Hide answer 
{
  "F": 80
}

Assessment instance

Assessment:
worksheet/template
Started at:
2026-08-04 16:40:07 (CDT)
Duration:
0s
View log
This box is not visible to students.