GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Moment of inertia is
A
vector
B
scalar
C
tensor
D
phasor
Explanation: 

Detailed explanation-1: -Moment of Inertia (I) is a tensor quantity because it possesses both magnitude and direction but does not obey vector algebra; as a result, it behaves both like a vector and like a scalar, thus earning the name tensor quantity.

Detailed explanation-2: -Moment of Inertia is also known as the angular mass or rotational inertia. The SI unit of moment of inertia is kg m2. Moment of inertia is usually specified with respect to a chosen axis of rotation. It mainly depends on the distribution of mass around an axis of rotation.

Detailed explanation-3: -Moment of Inertia of a Disk (massĂ—length2) is the unit of the dimension of Mass moments of inertia. The second moment of the area should not be confused with, which is used in beam calculations. rotational inertia, and sometimes as the angular mass is often also known as the mass moment of inertia.

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