Question of the Week 1

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This is a good question from Resnick Halliday

Those who can will do it in a flash otherwise keep thinking for the whole day and you wont get it ;)

Find the maximum heap (Height) that sand can make in a circle of radius of R.

Coefficient of friction between sand particles is k.

Assume sufficient friction between sand and ground!

#Miscellaneous #Question Of the Week

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7 Answers

1

Arpan Banerjee ·2009-03-18 01:45:43

I will give a total guess.cuz i don't wanna waste my whole day in futile thinking. Is it âˆšR² -L² , where L is the slant ht of the cone so formed

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Lokesh Verma ·2009-03-18 03:09:48

2 things

1) R<L .. so your quantity is -ve

2) You even then had to find L.. L is not given!

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Arpan Banerjee ·2009-03-19 00:41:38

So whats the answer

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Manish Shankar ·2009-03-19 01:35:46

Let the other guys try.

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Arpan Banerjee ·2009-03-21 08:57:15

I think everyone's done trying.Sir u can tell the answer now..Pls!!!!!!!!!!!

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INDRAJIT Ghosh ·2009-04-07 02:26:08

Since the system is balanced.....
therefore max height h/R = tanÎ¸

but by def. tanÎ¸=k, since Î¸ is the angle of repose..

therefore....h=R*tanÎ¸
or h=R*k....
i think this should be the answer?

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Lokesh Verma ·2009-04-14 01:24:41

yes indrajit good work :)

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Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

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