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# CBSE Class 11-science Answered

find the centre for mass for given system of a mass
Asked by js05 | 01 Feb, 2021, 08:51: PM
Let us assume the masses are placed at the vertex of equilateral triangle of side a.

Let base of triangle is parallel to x-axis .

X-coordinate of centre of mass  XCM  and Y-coordinate of centre of mass YCM are given as

;
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Part-(b)

Let mass m1 is moving with velocity v1 = v1x  + v1y  ;
Let mass m2 is moving with velocity v2 = v2x  + v2y  ;
similarly for other masses

X-coordinate and Y-coordinate of centre of mass are given as

......................... (1)
velocity components of centre of mass are obtained by differentiating eqn.(1)

Answered by Thiyagarajan K | 01 Feb, 2021, 10:51: PM
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