Grade 12Mechanics

Please explain. I calculated the kinetic energy if first system and then second system and then took the difference betweed them. i got the answer as (B) but in answer key provided, it is given (A). is my approach correct?

Question image for Please explain. I calculated the kinetic energy i

Atharva Kunte

8 Years agoGrade 12

1 Answer

Adarsh

8 Years ago

Dear Atharva,

First of all you have to conserve momentum then find the angular velocity of both cases .. change the angular velocity into linear velocity ( v = omega/r ) then find change in K.E in both case and you will get heat evolved ,...

Your approach is also correct .…..... maybe you have done some silly mistake in it …

Thanks and Regards

Adarsh

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Please explain. I calculated the kinetic energy if first system and then second system and then took the difference betweed them. i got the answer as (B) but in answer key provided, it is given (A). is my approach correct?

Atharva Kunte

1 Answer

Adarsh

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