Question

A machinist starts with three identical square plates but cuts one corner from one of them, two corners from the second and three corners from the third. Rank the three according to the x-coordinate of their centre of mass, from smallest to largest

• A. 3, 1, 2
• B. 1, 3, 2
• C. 3, 2, 1
• D. 1 and 3 tie, then 2

Answer 1

The correct option is B 1, 3, 2

$Answer:-$ 1,3,2

In 1 -> small portion from top left corner is removed there will be shift in x-co ordinate of COM in right direction

In 2 -> small portion from top left corner and bottom left corner also are removed there will be shift in x-co ordinate of COM in right direction (greater shift in right direction than 1)

In 3 -> small portion from top left corner and bottom left corner also are removed there will be shift in x-co ordinate of COM in right direction(greater shift in right direction than 1) and one portion from right top corner is than removed so a shift in leftward direction is attained which is comparable to 1. but is still in rightward direction to 1.