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2.a cube with each side of unit length has the same force F applied normally outwards on all its six faces.what are the expressions of longitudinal & volume strain in terms of the elastic modulii?

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- Thread starter soumya_26in
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2.a cube with each side of unit length has the same force F applied normally outwards on all its six faces.what are the expressions of longitudinal & volume strain in terms of the elastic modulii?

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Homework Helper

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Hi soumya! Welcome to PF!

You must tell us how far you've got, so that we know what's troubling you, and how to help.

Start with the balance … what have you tried?

What equations have you got?

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Hi soumya! Welcome to PF!

You must tell us how far you've got, so that we know what's troubling you, and how to help.

Start with the balance … what have you tried?

What equations have you got?

actually both prblms were in my class eleven's final Q paper.i have tried 1) as follows:

1)let,

mass of the glass piece=m gms

In 1st case, apparent wt of metal=(20-20/d1),d1=density of the metal

& apparent wt of glass=(m-m/d2),d2=density of the glass

by the prblm,

20-20/d1=m-m/d2.....(i)

In case 2, apparent wt of metal=[20-(20+0.84)*0.96/d1]

& apparent wt of glass=(m-m*0.96/d2)

by the prblm,

[20-(20.84*0.96)/d1]=(m-m*0.96/d2)....(ii)

is this process write?

- #4

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1)let,

mass of the glass piece=m gms

In 1st case, apparent wt of metal=(20-20/d1),d1=density of the metal

& apparent wt of glass=(m-m/d2),d2=density of the glass

by the prblm,

20-20/d1=m-m/d2.....(i)

In case 2, apparent wt of metal=[20-(20+0.84)*0.96/d1]

& apparent wt of glass=(m-m*0.96/d2)

by the prblm,

[20-(20.84*0.96)/d1]=(m-m*0.96/d2)....(ii)

is this process write?

- #5

Science Advisor

Homework Helper

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apparent wt of metal=(20-20/d1),d1=density of the metal

No.

(You understand, I can't give you the answer, I can only help you do it yourself? So …)

20 is the mass of the metal, but d1 is the mass/volume of the

Start again. Do it

First: what is Archimedes principle?

How

Same for the glass.

What equation can you write?

(How did you manage to post twice? If you click on "edit" under the second post, I think it gives you the option of deleting.)

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