Moment of Inertia

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:

• The former is collinear and the latter is parallel

• The former is parallel and the latter is perpendicular

• The former is perpendicular and the latter is collinear

• The former is acting on two points in the body while the latter is on three points

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

• The net force will act at the centroid of the structure only

• he net load will not be formed as all the forces will be cancelled

• The net force will act on the base of the loading horizontally

• The net force will not to be considered, there would be a net force of the distribution, rest will be the external forces

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

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?

• The net force will act at the centroid of the structure only

• The net load will not be formed as all the forces will be cancelled

• The net force will act on the base of the loading horizontally

• The net force will not be considered, there would be a net force of the distribution, and rest will be the external forces

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)?

• Thumb is z-axis, fingers curled from x-axis to y-axis

• Thumb is x-axis, fingers curled from z-axis to y-axis

• Thumb is y-axis, fingers curled from x-axis to z-axis

• Thumb is z-axis, fingers curled from y-axis to x-axis

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

• The net load will not be formed as all the forces will be cancelled

• The net force will act the centre of the parabola

• The net force will act on the base of the loading horizontally

• The net force will act at the centroid of the parabola

can be described by how difficult it is for a body to rotate about an axis

• Impulse

• Moment of Inertia

• Angular Velocity

• Angular Momentum

How difficult it is for a body to rotate about an axis can be described as:

• Angular Motion

• Angular Velocity

• Moment of Inertia

• Torque

In position A the figure skater has:

• A higher moment of inertia 

• A lower moment of inertia

• A higher angular velocity

• A lower angular velocity

Which of the following factors does not affect the moment of inertia of a rigid body?

• Mass distribution

• Axis of rotation

• Shape of the body

• Temperature of the body