JEE PHYSICS MCQ: SYSTEM OF PARTICLES

1 Medium

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Application +4 | -1

A uniform thin rod

\mathrm{AB}

of length

\mathrm{L}

has linear mass density

\mu(x)=a+\frac{b x}{L}

, where

x

is measured from

\mathrm{A}

. If the

\mathrm{CM}

of the rod lies at a distance of

\left(\frac{7}{12}\right) \mathrm{L}

from

\mathrm{A}

, then a and

\mathrm{b}

are related as :

View answer and explanation

Correct option: B

2 a=b

Option B (

2 a=b

) is correct because it represents the relationship between a and b derived from the center of mass calculation.

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