Chronology |
Current Month |
Current Thread |
Current Date |

[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |

*From*: bernard cleyet <bernard@cleyet.org>*Date*: Sun, 13 Jan 2019 20:23:33 -0800

This is beyond the usual capability of intro. students, so Eisberg and Lerner “do it” numerically. They call it the skydiver problem.

They give the ODE solution for the faithful students, as a cheque of the accuracy of the numerical.

bc Eisberg’s reader (QM) and MA student (oxygen-electron attachment in a multi-wire ionization chamber) at UCSB. (ca 1965)

I haven’t read it recently to know if linear drag is discussed applicable initially. (Well .. obviously for the first microseconds.)

On 2019/Jan/13, at 11:00, Carl Mungan via Phys-l <phys-l@mail.phys-l.org> wrote:

Noting that the drag force has the same v^2 dependence as the KE, one can

straightforwardly integrate in 1D:

https://www.usna.edu/Users/physics/mungan/_files/documents/Publications/EJP3.pdf <https://www.usna.edu/Users/physics/mungan/_files/documents/Publications/EJP3.pdf>

On Sat, Jan 12, 2019 at 10:21 PM brian whatcott <betwys1@sbcglobal.net <mailto:betwys1@sbcglobal.net>>

wrote:

I am pleased to use some of my dotage in answering questions on Quora.

I found this one strangely interesting:

How long does it take a jumper to reach terminal velocity?

**References**:**[Phys-L] Falling - the tale of a simple 1st degree non-linear ODE***From:*brian whatcott <betwys1@sbcglobal.net>

**Re: [Phys-L] Falling - the tale of a simple 1st degree non-linear ODE***From:*Carl Mungan <mungan@usna.edu>

- Prev by Date:
**Re: [Phys-L] Falling - the tale of a simple 1st degree non-linear ODE** - Next by Date:
**Re: [Phys-L] Falling - the tale of a simple 1st degree non-linear ODE** - Previous by thread:
**Re: [Phys-L] Falling - the tale of a simple 1st degree non-linear ODE** - Next by thread:
**Re: [Phys-L] Falling - the tale of a simple 1st degree non-linear ODE** - Index(es):