Particles of masses 1 kg and 3 kg are at (2i+5j+13k) m and (-6i+4j-2k) m. What is the position of their centre of mass?
A. 1/4 (-16i + 17j + 7k) m
B. 1/4 (-8i + 17j + 7k) m
C. 1/4 (-6i + 17j + 7k) m
D. 1/4 (-6i + 17j + 5k) m
Answer:A
Particles of masses 1 kg and 3 kg are at (2i+5j+13k) m and (-6i+4j-2k) m. What is the position of their centre of mass?
A. 1/4 (-16i + 17j + 7k) m B. 1/4 (-8i + 17j + 7k) m C. 1/4 (-6i + 17j + 7k) m D. 1/4 (-6i + 17j + 5k) m