Rotational Motion Question 175
Question: With 0 as the origin of the coordinate axis, the X and Y-coordinates of the centre of mass of the system of particles may be given as. Here m and 2m represent the masses of the particles.
Options:
A) $\left( -\frac{b}{2},0 \right)$
B) $\left( -\frac{b}{2},b \right)$
C) $\left( -\frac{b}{3},b \right)$
D) $\left( -\frac{b}{2}b,b \right)$
Show Answer
Answer:
Correct Answer: C
Solution:
[c]
$\overset{-}{\mathop{x}}=\frac{m(-2b)+2m(-b)+m\times 0+2m(b)}{m+2m+m+2m}=\frac{-b}{3}$
and
$\overline{y}=+b$
