A solid cube of the edge a is molten and moulded into eight identical small solid cubes and are placed on one other on a straight line with the edge of the bottom cube on the same horizontal plane on which big cube was placed, then the vertical shift in the centre of mass is

Question

A solid cube of the edge a is molten and moulded into eight identical small solid cubes and are placed on one other on a straight line with the edge of the bottom cube on the same horizontal plane on which big cube was placed, then the vertical shift in the centre of mass is, 3 a 2, 2 a, 5 a 2, 3 a

MARKS App · Accepted Answer

Initial height of centre of mass h i = a 2 As the volume remains same, 8 l 3 = a 3 l = a 2 Final height of centre of mass h f = 8 l 2 = 4 l ∴ Δ h = 4 l - a 2 = 2 a - a 2 = 3 a 2

Search any question & find its solution

Looking for more such questions to practice?