PPT-3.5 Mass-A Measure of Inertia

The more mass an object has the greater its inertia and the more force it takes to change its state of motion The amount of inertia an object has depends on its mass which is roughly the amount of material. - Class 19. Today:. Rotational . Motion, Rotational Kinematics (some review of Ch.4). Newton’s 2. nd. Law of Rotation. Torque. Moment of Inertia. Centre of Mass. Gravitational Torque. Pre-class reading quiz on Chapter 12. Today. Finish . last slides on energy from last time. Start lecture on Rotation (Chapter 8). Looking . ahead: . On Oct 9 . is the first midterm! Will be on . Chs. . 2,3,4,5,6,7,8. . . On Oct 6, will be a review session.. Licensed Electrical & Mechanical Engineer. BMayer@ChabotCollege.edu. Engineering 36. Chp10:. Moment of . Interia. Mass Moments of Inertia. The Previously Studied “Area Moment of Inertia” does Not Actually have True . (M-10) Rotational . Inertia and. Conservation of rotational momentum. 1. Why does a wheel keep spinning. ?. Spinning ice skater . Video. . Why is a bicycle stable when it is moving, but falls over when it stops. mass. Using one or more of your senses to gather information is called. observing.. If you conduct an experiment and draw conclusions that are based on your beliefs rather than the facts, you are using. The Law of Inertia. The first law says that an object at rest tends to stay at rest, and an object in motion tends to stay in motion (with the same direction and speed) unless acted upon by an unbalanced force.. Rotational Inertia and. Conservation of rotational momentum. Why does a wheel keep spinning?. Why . is a bicycle stable . when it is . moving, but . falls. . over when it stops?. 1. Rotational inertia . Conservation of rotational momentum. 1. Why does a wheel keep spinning. ?. Why . is a bicycle stable when it is moving, but falls over when it . stops?. Why is it difficult to change the orientation of the axis of a spinning wheel?. Conservation of rotational momentum. 1. Why does a wheel keep spinning. ?. Spinning ice skater . Video. . Why is a bicycle stable when it is moving, but falls over when it stops. ?. Why is it difficult to change the orientation of the axis of a spinning wheel?. We consider the rotation of . rigid bodies. . A rigid body is an extended object in which the mass is distributed spatially.. Where should a force be applied to make it rotate (spin)? The same force applied at . 1. st. Law of Motion. Inertia. An object will remain at rest or in constant motion unless acted upon by an unbalanced force. . “The Old Tablecloth Trick”. How does this comic relate to Inertia? . a = r. α. F = . mr. α. . Στ. = r . Σ. F . = . Σ. mr. 2. α. Moment of Inertia (. . I ) – sum of rotational inertia of an object. I = . Σ. mr. 2. . Στ. = I . α. Equation. Rotational Dynamics. Note, all lectures and pre-lectures posted up as always at. http://www.hunter.cuny.edu/physics/courses/physics100/spring-2016. Looking ahead. : Sep 27, Review (. Chs. 2,3,4,5,6,7,8). Sep 30: Midterm . D. ate. U. nderline. M. iss a line. T. itle. U. nderline. M. iss a line. Times tables practise. 1) How many grams are there in 1 kilogram?. Continue the sequence. 100, 150, 200, 250, ____, ____, ____, ____.