Four particles of masses 5, 2, 1, and 4 kg are 39. placed at the points with position vectors 2j – k, 5i – j, 4i –- 3j + k and i + j + 3k respectively. the position vector of their centre of mass is 3 i+j+ 2 C i+ D

College Physics
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Chapter1: Units, Trigonometry. And Vectors
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Four particles of masses 5, 2, 1, and 4 kg are
placed at the points with position vectors
2j – k, 5i – j, 4i –- 3j + k and i + j + 3k
respectively. the position vector of their
centre of mass is
A 2
39.
3
3
3
3
i+j+
2
B
C
D
+
Transcribed Image Text:Four particles of masses 5, 2, 1, and 4 kg are placed at the points with position vectors 2j – k, 5i – j, 4i –- 3j + k and i + j + 3k respectively. the position vector of their centre of mass is A 2 39. 3 3 3 3 i+j+ 2 B C D +
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