Question

Locate the centre of mass of arrangement shown in figure. The three rods are identical in mass and length
y-axis
X-axis

Answer 1

Answer:

11th

Physics

Systems of Particles and Rotational Motion

Centre of Mass of Different Objects

Locate the centre of mass o...

PHYSICS

Locate the centre of mass of arrangement shown in figure. The three rods are identical in mass and length.

question

December 26, 2019

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Shibendu Gersappa

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ANSWER

Here , the coordinates of the centre of mass of the three

rods are :

(0,

2

L

) , (

2

L

,0) , (

2

L

,L)

The arrangement is symmetric about the line y =

2

L

Hence the y coordinate of the centre of mass is

2

L

.

Now , x coordinate of the centre of mass =

∑m

i

∑m

i

x

i

=

3

L

Therefore , the centre of mass of the arrangement is at (

3

L

,

2

L

) .