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ICSE Class 10 Answered

Pls solve it
Asked by subhasray1968 | 25 Dec, 2017, 05:58: PM
answered-by-expert Expert Answer
the knife should be placed at the
centre of mass of the system
 
 
begin mathsize 24px style C o M equals fraction numerator sum for 1 of m subscript i x subscript i over denominator begin display style sum for 1 of end style m subscript i end fraction equals fraction numerator 10 x 20 plus 20 x 30 plus 60 x 50 plus 90 x 80 over denominator 20 plus 30 plus 60 plus 80 end fraction equals space 11000 over 190 equals space 57.89 space c m end style
Answered by Gajendra | 26 Dec, 2017, 03:49: PM

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