250 - Mechanics part 1 Questions Answers

Irodov 1.2 Q61 

two touching bars 1 and 2 are placed inclined plane forming an angle alpha with horizontal the masses of the bars are equal to M1 and M2 and the coefficient of friction between the inclined plane and these bars are equal to K1K2 respectively with the k1>k2 . find
a) the force of interaction of the bars in the process of motion 

b) the minimum value of the angle alpha at which the bars start sliding down
 

 

my doubt; 

if I consider them to be 1 mass system , then what would happen to the resultant friction coefficient of the 1 mass system , would it be k1 + k2 ?

thank you

Asked By: DIPESH
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Asked By: TUSHAR GUPTA
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Asked By: TUSHAR GUPTA
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Asked By: TUSHAR GUPTA
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Joshi sir comment
Please upload solution. Thanks in advance. 
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Joshi sir comment
Please sir post the solution of this question.   Thanks in advance
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