Answer to puzzle 3.
The definition of Centre or gravity states that the "Whole mass of any given object can be balanced about a point against gravitational force, and that point is the centre of gravity of the given mass.".
The important point to be noted is that the CG Point need not necessarily divide the area or mass equally, but moments taken about CG in any direction are equal.
The important point to be noted is that the CG Point need not necessarily divide the area or mass equally, but moments taken about CG in any direction are equal.
The moments about CG are shown in figure. They are equal because larger area is at a smaller distance and smaller area is at a larger distance.
Moments about G = W1 x G1G = W2 x G2G.
So, 800 X 13.33333 = 1000 X 10.666 = 10666.( please see the figure below)
Hence, for any triangle, CG will be exactly at 1/3rd the height from the base.
Moments about G = W1 x G1G = W2 x G2G.
So, 800 X 13.33333 = 1000 X 10.666 = 10666.( please see the figure below)
Hence, for any triangle, CG will be exactly at 1/3rd the height from the base.
The names of those who answered correctly are:
- Anil kumar A V. , Bangalore
- Ganesh G, Bangalore
- Prakhar kumar , Bangalore
Answer to Puzzle 2.
The answer to puzzle 2, the lock puzzle is 285. It is very simple and no explanation is required.
Many of you have not uploaded your names while solving. I was able to get 12 names, which are given below.
Names of those who solves the puzzle 2 are:
Many of you have not uploaded your names while solving. I was able to get 12 names, which are given below.
Names of those who solves the puzzle 2 are:
- Harsha Bhushan
- Nagarathna HS
- Tejesh
- Rajesh M
- Dr. A S Chandrasekar Rao
- Sowmya nagaraja
- Grish N
- Kshithij Rao .G
- Ganesh.G
- Praveen
- Ravindrakumar k
- Pradeep S Magadum