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Grade: 11
        The position vectors of two bodies of masses 2kg and 3kg are given as 2i+3j+5k and 3i_4j+7k. Find the position vector of centre of mass of the system.
3 years ago

Answers : (1)

Vikas TU
11138 Points
							
hiii sharanya
  centre of mass of two particle system is given by 
 (m1r1+m2r2)/(m1+m2)
here m1=2kg r1=2i+3j+5k
m2=3kg r2=3i+4j+7k
so COM of two particle system is (2(r1)+3(r2))/5
so ans is (14i+18j+31k)/5   , this is your answer 
thanks
3 years ago
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