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Moment of inertia is the property of a deformable body that determines the moment needed to obtain a desired curvature about an axis. Moment of inertia depends on the shape of the body and may be different around different axes of rotation. Moment-curvature relation: E: Elasticity modulus (characterizes stiffness of the deformable body) : curvature
• Example: An unexpected shove from the side as you run straight down a hallway might send you careening into the wall. Lesson: you shouldn’t be running indoors. • Circular motion is produced by acceleration of v2/r (r is radius of curve)
2 Αυγ 2023 · Moment of inertia, also known as rotational inertia or angular mass, is a physical quantity that resists a rigid body’s rotational motion. It is analogous to mass in translational motion. It determines the torque required to rotate an object by a given angular acceleration.
Inertia is the tendency for an object at rest to remain at rest, or for a moving object to remain in motion in a straight line with constant speed. This key property of objects was first described by Galileo.
Most of us are familiar with what happens when two identical objects (presumably, therefore, having the same inertia) collide: if the collision is head-on (so the motion, before and after, is confined to a straight line), they basically exchange velocities.
Inertia is the resistance of an object to a change in its position (or its current motion). This is Newton’s First Law. § What properties of an object do you think affects its inertia? Objects already in motion have momentum. Momentum is the tendency of a moving object to keep moving.
A great example of inertia is when somebody is not wearing a seat belt while driving. The car collides with a tree and the person flies. The body was just trying to keep the same speed before impact.
