Rotational Motion Question 145
Question: Two spheres A and B of masses m and 2m and radii 2R and R respectively are placed in contact as shown. The COM of the system lies
Options:
A) insider
B) insider
C) at the point of contact
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Let O (0,0) be the centre of sphere A then,
$x _{cm}=\frac{m\times 0+2m\times 3R}{m+2m}=2R$=At the point of contact
