JEE Main 2019 — Physics solution | Fundamenthol

JEE Main2019Physics

Q.

The position vector of the centre of mass $r_{c m}$ of an asymmetric uniform bar of negligible area of cross-section as shown in figure is.

A
$r_{c m} = \frac{5}{8} L \overset{x}{^} + \frac{13}{8} L \overset{y}{^}$
B
$r_{c m} = \frac{3}{8} L \overset{x}{^} + \frac{11}{8} L \overset{y}{^}$
C
$r_{c m} = \frac{13}{8} L \overset{x}{^} + \frac{5}{8} L \overset{y}{^}$
D
$r_{c m} = \frac{11}{8} L \overset{x}{^} + \frac{3}{8} L \overset{y}{^}$

Solution

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