Ode solve and if - new task

[ValeryOchkov]

A man jupping into water from a 10 m tower. How deep he will sink into water?

A "man" is a ball with r=30 cm and Ro=950 kg/m3

[ValeryOchkov]

Valery Ochkov wrote:

A man jupping into water from a 10 m tower. How deep he will sink into water?

A "man" is a ball with r=30 cm and Ro=950 kg/m3

One solution - new very interesting attaractor:

[AlanStevens]

Strictly, Valery, you should test to see if the flow is laminar or turbulent. If it is laminar then the resistance should be linear with velocity .i.e. proportional to v rather than v^2. Nice attractor though!

Alan

[ValeryOchkov]

AlanStevens wrote:

Strictly, Valery, you should test to see if the flow is laminar or turbulent. If it is laminar then the resistance should be linear with velocity .i.e. proportional to v rather than v^2. Nice attractor though!

Alan

Thanks Alan - I know it. We must think not only about Ro but about Re too!

It (see above) is only simple Math model.

I would like to collect a set of same task for students. Help me please!

And what can you say about it - http://communities.ptc.com/message/187953

[ValeryOchkov]

The animation of this problem - http://communities.ptc.com/videos/3242