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NEET
Exam
NEET
Subject
Physics
Chapter
Rotational Motion

NEET · Physics · Rotational Motion

In a system where (n-1) equal point masses each of mass m are...

In a system where (n-1) equal point masses each of mass m are placed at the vertices of a regular n-polygon, while the vacant vertex has a position vector a with respect to the center of the polygon, what is the position vector of the center of mass?

Options

  1. A1n−1a\frac{1}{n-1}a
  2. B11−na\frac{1}{1-n}a
  3. C11−n2a\frac{1}{1-{{n}^{2}}}a
  4. D1n2−1a\frac{1}{{{n}^{2}}-1}a

Correct answer

B. 11−na\frac{1}{1-n}a

Step-by-step solution

Correct Option is : (B)
11−na\frac{1}{1-n}a
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