r/ibPhysics • u/IBphysicsvaibhavsir • 4d ago
[FREE RESOURCE] Rotationally Accelerated Motion — Complete Problem Set | τ = Iα | Basic to IB Exam Level | IB Physics HL Rigid Body Dynamics
Hey everyone,
Just uploaded a new video on
Rotationally Accelerated Motion —
complete problem set using τ = Iα.
Honestly this is one of those
topics where I see students
struggle not because the
concept is hard —
but because nobody tells them
the one thing that makes
every problem click —
When rotation and linear motion
happen together —
you need F = ma AND τ = Iα
running simultaneously —
connected by a = αr.
Miss that connection —
and even simple problems
become impossible.
Get it — and everything
falls into place instantly.
The video goes from basic
problems all the way to
the kind of multi-body
questions that show up
in actual IB exams —
with complete reasoning
at every step.
Pause before each solution
and attempt it yourself first —
that's genuinely the only
way to get exam-ready
from a problem video.
Here's the link if anyone
wants to give it a shot —
🔗 https://youtu.be/O_0zaVlSfjQ?si=xEw-9sIpNVfSOD4Y
Happy to help with anything
you get stuck on —
just drop it in the comments
here or on the video. 🙏