Question

69. Moment of inertia of a square of side b about an axis through its centre of gravity
is :
64
b3
(B)
(A)
12
4
644
(D)
(C)
8
3​

Answer 1

Answer:

your answer is moment of I teria a) 12

Answer 2

Answer:

Concept:

A rigid body's moment of inertia, also referred to as its mass moment of inertia, angular mass, second moment of mass, or, more precisely, rotational inertia, is a property that establishes the torque required to achieve a desired angular acceleration about a rotational axis, much like mass establishes the force required to achieve a desired acceleration. Depending on the axis selected and the distribution of the body's mass, a change in the body's rate of rotation will need a greater torque for larger moments.

Given:

b-sided square's moment of inertia around the axis passing through its center of gravity

A. b³/4

B. b⁴/12

C. b⁴/3

D. b⁴/8

Find:

identify the solution to the issue at hand.

Answer:

The answer is option (B). b⁴/12

Determining an object's center of gravity involves dividing the total weight of the object by the sum of its moments. When measured from a predetermined point known as the origin, the moment is the product of the weight and the position.

A book will fall or has a tendency to tumble off a table if it is put close to the edge, with the majority of the book protruding beyond the edge. The fundamental cause of this is that the book's weight is not correctly balanced. It serves as the book's center of gravity. The book will fall or has a tendency to tumble if this location is outside the edge of the table. As a result, a location where an object's entire mass or weight is believed to be concentrated is known as the center of gravity of the object. The letters "G" or "C.G" are typically used to indicate an object's center of gravity.

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