Rigid-Body KineticsThe two equations that govern a body which both moves and spins.Mechanical EngineeringForce drives the centre of mass; moment about thatcentre drives the spin.ΣF = m aG · ΣMG = IG αWheel rolling, no slipa = α rKinematic constraint.Rod pinned at OΣMO = IO αIO is about the pin.IG = 2, α = 5 rad/s²Moment = 10 N·mUnits N·m.THE COMMON MISTAKE✗ Using I about the centroid for a pinned body✓ Shift it: IO = IG + md²The parallel axis term is often larger than IG itself. For a uniform rod pinned atone end it triples the value.Assumes a rigid body in plane motion. A flexible member needsvibration analysis instead.Rigid-Body Kineticslearnposters.com
Rigid-Body Kinetics — printable engineering wall chart from LearnPosters. Free vector PDF, US Letter and A4.

What’s on the Rigid-Body Kinetics poster

The rule, 3 worked examples, and the mistake everyone makes.

Assumes a rigid body in plane motion. A flexible member needs vibration analysis instead.

Questions about the Rigid-Body Kinetics poster

What’s on the Rigid-Body Kinetics poster?
The rule, 3 worked examples, and the mistake everyone makes. Force drives the centre of mass; moment about that centre drives the spin.; ΣF = m aG · ΣMG = IG α; Wheel rolling, no slip = a = α r; Rod pinned at O = ΣMO = IO α; IG = 2, α = 5 rad/s² = Moment = 10 N·m; Common mistake: Using I about the centroid for a pinned body → Shift it: IO = IG + md². Assumes a rigid body in plane motion. A flexible member needs vibration analysis instead.
Who is the Rigid-Body Kinetics poster for?
Rigid-Body Kinetics belongs to the Mechanical Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning statics & dynamics can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the Rigid-Body Kinetics poster?
Rolling wheels, swinging links, anything accelerating rather than balanced. A wall chart earns its place by being glanceable from where the work is happening, so Rigid-Body Kinetics belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
What other posters go with Rigid-Body Kinetics?
Finding a Centroid, Dry Friction and Energy or Momentum? sit alongside Rigid-Body Kinetics in the Mechanical Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Finding a CentroidDry FrictionEnergy or Momentum?
Is the Rigid-Body Kinetics poster free to download and print?
Yes. Rigid-Body Kinetics downloads as a free PDF with no account, no email and no watermark, like everything else in the Mechanical Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Rigid-Body Kinetics poster print at?
Rigid-Body Kinetics is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Rigid-Body Kinetics loses nothing.Printing guide

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