wrobel's latest activity

????? By definition, purely translational motion is when all the points of a rigid body move with the same velocity

My version is $$L=mr^2\dot\theta^2(1+\cos\alpha)+mgr\theta\sin\alpha$$ hopefully that is the same:)

A slab rests on two massless rollers of different radii such that the angle of the slab's inclination is ##\alpha##. There is no...

Any set can be covered by a finite intersection of closed sets; simply take its closure. Furthermore, the closure of a set is itself the...

mech problems I like 3D problems more, but these are also great

Almost always, the field of scalars is the field of real or complex numbers.

The book is pointless. The author yanked random bits from differential geometry, linear algebra, calculus, and physics. It’s the best...

"No forces" and "zero net force" are in fact the same thing, since we are considering a single particle. If you have a particle at...

Do that. will see how GPT deals with it

Read decent books: Finite-Dimensional Vector Spaces by Paul R. Halmos

Write the angular momentum change theorem about the suspension point of the chain; ##(r>0)##

At the point where the circle is tangent to the straight line, the acceleration of the chain links undergoes a discontinuity. Just a remark

Why, for example, is it a semicircle? There are plenty of other curves out there.

I would like to understand which part did you thought was strange ? Only then, can i attempt to figure out the rationale.

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