1.

11) A body has its centre of mass at the origin. The x-coordinates of the particles(A) may be all positive(B) may be all negative(C) may be all non-negative(D) may be positive for some cases and negative in other cases

Answer»

(c) MAY be all non-negative
(d) may be positive for some cases and negative for other cases

According to the QUESTION, the centre of MASS is at origin.

∴ X = m1x1 + m2x2 + m3x3 +...m1 + m2 + m3 +....... = 0
⇒m1x1 + m2x2 + m3x3 +... = 0

From the above equation, it can be concluded that all the x-coordinates may be non-negative.

In other words, they may be positive for some cases and negative for others.



Discussion

No Comment Found

Related InterviewSolutions