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V
24-Ruby IV
ValeryOchkov24-Ruby IV
24-Ruby IV
September 1, 2012
Question

Ode solve and if - new task

  • September 1, 2012
  • 1 reply
  • 3435 views

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

1 reply

V
24-Ruby IV
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
September 4, 2012

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:

jump.png

A
AlanStevens19-Tanzanite
19-Tanzanite
September 4, 2012

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

V
24-Ruby IV
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
September 4, 2012

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

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