[phoenix-project] Re: Falling ball viscometer cum densitometer
- From: Roy <roy@xxxxxxxxxxx>
- To: I_deserve_d_bests_in_life <borthakur.gg@xxxxxxxxx>
- Date: Tue, 31 May 2011 12:42:39 +0530
Dear Dr. Borthakur,
You may have to try composite objects to get the density close to
1200Kg/m3.
Plastic density is in the range 880-920Kg/m3. If you coat the plastic
balls with plasticine (modelling clay) whose density is ~ 1800Kg/m3 in
the correct ratio (70:30), you can get ~1200Kg/m3.
You will of course end up with not exactly spherical balls, but then
effect of different shapes can also be investigated.
Let me know if you succeed.
Regards,
Amit Roy
On Tue, 2011-05-31 at 09:14 +0530, I_deserve_d_bests_in_life wrote:
> Dear Dr Ajith Sir,
> In The Phoenix workshop 2nd - 7th may, I have proposed to built a
> falling ball viscometer with the expeyes system.and It sounded
> interesting and doable to few present there.
> Back home I have tried to implement the idea. You need graduated
> cylinder with the experimental liquid and a spherical ball to fall
> freely through it.Commonly available metal balls have so high density
> that It cant achieve terminal velocity for the taken length of the
> cylinder. Plastic balls I used float, so does not serve my purpose.To
> measure the density of commonly available liquids, I need a small ball
> of material density slightly grater than 1200Kg/m3.
> Do any of the group has a suggestion ?
>
>
> What is more interesting is that the same apparatus with slight
> modifications can be used as a densitometer, once the stated problem
> is solved .
>
> --
> *With regards, *
>
> *GGB**
> ....................................................
> Dr.GOURI GOUTAM BORTHAKUR
> Assistant Professor & Entrepreneurship educator
> Writer, Teacher and Research Guide
> Dept of Physics
> JORHAT INSTITUTE OF SCIENCE AND TECHNOLOGY
> Jorhat-10
> Assam ** <http://phy-effects.blogspot.com/>*
> *Ph -9864308097
> *
>
>
>
>
--
Dr. Amit Roy
Director, Inter-University Accelerator Centre Fax:
+91-11-2689-3666, 2612-1960
Aruna Asaf Ali Marg, Post Box No 10502 Phone:
+91-11-2689-3045(Office)
New Delhi - 110 067, India
+91-11-2689-3513(Res)
Website: www.iuac.ernet.in, www.iuac.res.in E-Mail:
roy@xxxxxxxxxxx
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