Civil Engineering - Applied Mechanics - Discussion

4. 

From a circular plate of a diameter 6 cm is cut out a circle whose diameter is equal to the radius of the plate. The C.G. of the remainder from the centre of circular plate is at a distance of

[A]. 2.0 cm
[B]. 1.5 cm
[C]. 1.0
[D]. 0.5 cm.

Answer: Option D

Explanation:

No answer description available for this question.

Rajesh Thakur said: (Dec 10, 2016)  
On x - axis, X= R * 3 -r * 3/R * 2 - r * 2 = 3 * 3 - 1.5 * 3/3 * 3 - 1.5 * 2 = 3.5cm,
Hence distance of centre of gravity of remainder from centre of circle.
3.5 - 3 = 0.5.

Pavan B said: (Dec 11, 2017)  
r/R = 1.5/3.0 = 0.5.
So,
C.G of the circle acts on the center of a circle.

Bhoopender Chauhan said: (Jan 5, 2018)  
C.g of reminder from centre is R/6.
And from end is 7R/6,
So a/q.
From centre of plate R/6=3/6=.5

Avinash said: (Jan 21, 2019)  
X = 5R/6.
= 5(3)/6,
=2.5.

X is the distance of the centroid from the end in the question he asked distance of the centroid from centre.

Circle centre at 3 so;
3-2.5= 0.5 is the answer.

Lalan Kumar said: (Sep 28, 2019)  
R/D = cg.
3/6 = .5.

Swapnalatha said: (Jul 18, 2020)  
R/D = 3/6 = 0.5.

Aman said: (Apr 1, 2021)  
Thanks all for explaining.

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