✓Lesson Snapshot
Student Objective
I can calculate work and mechanical advantage using measured force and distance data from a mechanism.
Main Activity
Measure input and output forces/distances for a lever, ramp, pulley, or VEX mechanism and compare actual performance to expected behavior.
Deliverable
Work and mechanical advantage calculation set
Tools / Materials
Spring scales, rulers or tape measures, simple machines, notebook, calculator
1ProblemUnderstand the challenge and why it matters.
A mechanism that “feels easier” is not automatically better. Engineers need measurements and calculations to compare how much force is needed, how far parts move, and how much useful work is produced.
2ConceptLearn the engineering idea or skill.
Work depends on force and distance. Mechanical advantage compares how much a mechanism multiplies force or changes the input effort needed to complete a task.
3ApplyUse the skill in a guided task.
Collect at least three measurements from a simple mechanism. Calculate input work, output work, ideal mechanical advantage if applicable, and actual mechanical advantage from measured values.
4DocumentRecord your evidence and decisions.
Show formulas, substitutions, units, and final answers. Include a short explanation of what the calculations reveal about the mechanism.
5ReviewCheck quality and identify your next step.
Check that force, distance, and work units are correct. Your conclusion should explain performance using evidence, not opinion.
Lesson Resources
Use these files and shared website resources when they support today’s work.
Engineering Graph Paper
Use for sketches, layouts, calculations, systems diagrams, and test planning.
Open ResourceMeasurement Data Sheet
Record repeated trials, measurements, calculations, and observations.
Open Resource