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J Ravi Kiran Grade: 11
        

 


 a)How many revolutios per minute must the apparatus shown in below figure make about a vertical axis so that the cord makes an angle of 450 with the vertical?


b) What is the tension in the cord then.  Given l = √2 m,  a = 20 cm and m = 5 kg?


 

 


6534-604_1925_jrk.bmp


7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear J kiran


Diagram is not clear please upload it again and post your question


This type of problem can be solved by taking component of tension


T cos45 = mg


Tsin45 =mw2r    where r =lsin45


so T =mw2l


 


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Badiuddin


 

7 years ago
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