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Search options not deleted user 83339

Applies to questions of primarily educational value - not only questions that arise from actual homework assignments, but any question where it is preferable to guide the asker to the answer rather than giving it away outright. Please READ THE GUIDANCE IN META before asking homework-like questions.

2 votes
Accepted

Proof of a formula relating launch velocity of projectile to times of ascent and descent

The height $h(t)$ of the body as a function of time is $$h(t)=-\frac{1}{2}gt^2+vt$$ with $v$ the initial speed. At $t_1$ and $t_2$, the body will be at the same height. It means that $$h(t_1)=h(t_2)$$ …
Riccardo Buscicchio's user avatar
1 vote
1 answer
237 views

Solid of revolution rolling on an arbitrary incline

I'm studying the mechanics of a rigid solid of revolution on an incline. This is somewhat a variation of the double-cone "paradox", just slightly more general (hence, complicated). Geometry Here is …
Riccardo Buscicchio's user avatar
5 votes
1 answer
246 views

Deflating wheel rolling without slipping

For a wheel of radius $R$ on an horizontal plane, the "rolling without slipping condition" is given by $$\Delta s =\Delta l$$ with $\Delta l$ being the distance travelled on the plane. $\Delta l$, bec …
Riccardo Buscicchio's user avatar