Question

WHAT IS INERTIA?HOW IS IT CALCULAted

Answer 1

Answer:

Inertia is a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

Inertia is calculated by taking the sum of the product of each point mass by its distance from the centre of gravity.

Answer 2

Answer:

INERTIA is a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

Rotational inertia is calculated for objects rotating about an axis. Rotational Inertia = m(r)(r), where "m" is the mass and "r" is the radius or the distance between the object and the axis.

Translational Inertia = ma, where "m" is the mass, and "a" is the acceleration of the object.

Calculate the rotational inertia for a solid cylinder or disk of radius "r" and mass "m" by the formula, inertia =1/2(m)(r)(r).

Calculate the rotational inertia for a thin-shelled hollow sphere of radius "r" and mass "m" by the formula, inertia = 2/3(m)(r)(r).

Calculate the rotational inertia for a solid sphere of radius "r" and mass "m" by the formula, inertia = 2/5(m)(r)(r).

 

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