Test: Mass Moment Of Inertia


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Test: Mass Moment Of Inertia - Question 1

The measure of the body’s resistance to angular acceleration is called ___________

Detailed Solution for Test: Mass Moment Of Inertia - Question 1

The measure is known as mass moment of inertia of a body. It’s very useful in the designing of the structures. It also helps in the determination of the strength of the body. Thus a very useful thing in the structural engineering.

Test: Mass Moment Of Inertia - Question 2

Determine the mass moment of the area of the cylinder given below.

Detailed Solution for Test: Mass Moment Of Inertia - Question 2

The measure of moment of inertia of a body is important. It’s very useful in the designing of the structures. It also helps in the determination of the strength of the body. Thus a very useful thing in the structural engineering.

Test: Mass Moment Of Inertia - Question 3

We define the moment of inertia of a body as________

Detailed Solution for Test: Mass Moment Of Inertia - Question 3

The definition of the of the moment of the inertia of the body is given by

That is the integration of the total mass and the square of the distance of that mass from the axis of rotation. Thus the moment of inertia.

Test: Mass Moment Of Inertia - Question 4

Two of the things of the composite materials are to be known so that their mass moment of inertia can be varied. Which of the following is one of them?

Detailed Solution for Test: Mass Moment Of Inertia - Question 4

The centre of the gravity’s location and the weight of the composite body is needed to be known. This means that if both of the quantities of the composite body is known then the moment of inertia of the body can be altered. Thus both are very important things to be known about the composite bodies.

Test: Mass Moment Of Inertia - Question 5

We define the moment of inertia of a body in terms of volume of the body as______________

Detailed Solution for Test: Mass Moment Of Inertia - Question 5

The definition of the moment of the inertia of the body in terms of volume is given by

That is the integration of the total mass as determined by the product of the volume and density and the square of the distance of that mass from the axis of rotation. Thus the moment of inertia.

Test: Mass Moment Of Inertia - Question 6

We use the distance of the axis and the particles, and in that we apply parallel axis theorem. The distance in the parallel axis theorem is multiplied by_______

Detailed Solution for Test: Mass Moment Of Inertia - Question 6

Parallel axis for any area is used to add the two mutually perpendicular moment of inertias for areas. It gives a moment of inertia perpendicular to the surface of the body. And uses the square of the distance from the axis of rotation multiplied by the area.

Test: Mass Moment Of Inertia - Question 7

One of the use of the centre of mass or centroid is as in the mass moment of inertia is that the net force acts at the ___________ of the loading body.

Detailed Solution for Test: Mass Moment Of Inertia - Question 7

In the moment of inertia calculations we see that the net force acts at the centroid of the loading body. That is if the loading system is in the form of the triangle then the at the distance 2 by 3 of the base the net force of the loading will act. And the load will be half the area of the loading.

Test: Mass Moment Of Inertia - Question 8

If the non-Uniform loading is of the type of parabola then for calculating the mass moment of inertia for areas?

Detailed Solution for Test: Mass Moment Of Inertia - Question 8

The net force will act at the centroid of the parabola. Whether it be a parabola or the cubic curve the centroid is the only point at which the net force act. Force can’t be acted horizontally if the loading is vertical. Hence whatever be the shape of the loading, the centroid is the point of action of net force. Thus the use of centroid.

Test: Mass Moment Of Inertia - Question 9

Determine the mass moment of the area of the cylinder given below.

Detailed Solution for Test: Mass Moment Of Inertia - Question 9

The measure of moment of inertia of a body is important. It’s very useful in the designing of the structures. It also helps in the determination of the strength of the body. Thus a very useful thing in the structural engineering.

Test: Mass Moment Of Inertia - Question 10

Which of the following is true?

Detailed Solution for Test: Mass Moment Of Inertia - Question 10

The definition of the moment of the inertia of the body in terms of volume is given by

That is the integration of the total mass as determined by the product of the volume and density and the square of the distance of that mass from the axis of rotation. Thus the moment of inertia.

Test: Mass Moment Of Inertia - Question 11

The body is sometimes acted by two or three force members and we need to find the mass moment of inertia for the same. The difference between the two and the three force members is:

Detailed Solution for Test: Mass Moment Of Inertia - Question 11

The definition of the two force member only defines that the forces are being acted on the two points on the body. So does is the definition of the three forces members. The points of action of the three forces are three.

Test: Mass Moment Of Inertia - Question 12

If any external force also is applied on the structure and we are determining the mass moment of inertia then what should we consider?

Detailed Solution for Test: Mass Moment Of Inertia - Question 12

The external forces are treated differently. They are not added by the force of the distributed loading. That is the force not only acts at the centroid always. It can be shifted also. Depending on the external forces. Thus the use of centroid or centre of mass.

Test: Mass Moment Of Inertia - Question 13

If any external force also is applied on the distributed loading on which the mass moment of inertia is to be determined on the composite body then?

Detailed Solution for Test: Mass Moment Of Inertia - Question 13

The external forces are treated differently. They are not added by the force of the distributed loading. That is the force not only acts at the centroid always. It can be shifted also. Depending on the external forces. Thus the use of centroid or centre of mass.

Test: Mass Moment Of Inertia - Question 14

Which of the following is true?

Detailed Solution for Test: Mass Moment Of Inertia - Question 14

The definition of the moment of the inertia of the body is given b

That is the integration of the total mass and the square of the distance of that mass from the axis of rotation. Thus the moment of inertia.

Test: Mass Moment Of Inertia - Question 15

We use sometimes the measures to know the direction of mass moment of inertia. It is done by right handed coordinate system. Which is right about it for the composite bodies (consider the mentioned axis to be positive)?

Detailed Solution for Test: Mass Moment Of Inertia - Question 15

As right handed coordinate system means that you are curling your fingers from positive x-axis towards y-axis and the thumb which is projected is pointed to the positive z-axis. Thus visualizing the same and knowing the basic members of axis will not create much problem.

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