Modern Physics

A chain of length
L and mass density ¾
is held such that it hangs vertically just
above a scale. It is then released. What is the reading on the scale, as a function of
the height of the top of the chain?

debesh kumar

16 Years agoGrade

2 Answers

Arun Kumar

12 Years ago

Hello

Well most probably it will depend linearly with respect to length of the chain.

But a graphic explanation of the problem could have been led to a specific solution.

Thanks & Regards

Arun Kumar

Btech, IIT Delhi

Askiitians Faculty

Kaviraj

8 Years ago

Well , the question is one with variable mass, so either you can write the equation of F =dp/dt or solve it in parts,(k is the density)

SOLUTION:

Let height be x at a certain instant ,

Writing the equation,

F-kgL = kax+kv²

here a will be equal to g as it is freefall and v will the velocity that comes from energy conservation of the top part of the chain.

Solving we get F = 3kg(L-x) =9kg(L-x)/4

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A chain of length L and mass density ¾ is held such that it hangs vertically just above a scale. It is then released. What is the reading on the scale, as a function of the height of the top of the chain?

debesh kumar

2 Answers

Arun Kumar

Kaviraj

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the height of the top of the chain?

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