PPT-Inertia and Newton’s First Law of Motion

Lesson 14 February 10 th 2011 DEMO TIME Can you drop the penny in the flask by only touching the ring Question When you are standing on the train and it suddenly starts to move what happens. The unit vectors 1 2 3 B e e e are fixed in the body and directed along a convenient set of axes pass ing through the mass center G The moments of inertia of the body about t hese axes are defined as 22 xx I y z dm 22 yy I x z dm 22 zz I x Very brie64258y it measures an objects resistance inertia to change in its rotational motion It is analogous to the way mass measure the resistance to changes in the objects linear motion Because it has to do with rotational motion the moment of ine Laws of . Motion. A . scientific law . is something that will happen in the physical world each and every time that conditions allow for it.. Gravity. Conservation of momentum. Newton’s laws. 1. st. Chapter 2 Section 2 Review. A. . An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.. B. . Every action has an equal and opposite reaction. . ERCOT. . Joint . FAS/SIRS . Meeting. September 21. st. , 2015. 134 of 145 Wind Generators Responded to Wind . Emulated. . Inertia RFI.. Are there currently any Wind Generators (WGRs) providing Emulated Inertia Response (EIR) in ERCOT? . To Cambridge University . sizar. in 1661 . Plague forced university to close – Newton goes home to . Woolsthorp. Annus. mirabilis of 1666. Calculus. Problem of the Moon. Dominated by Aristotle. Newton read Descartes, Galileo, . Newton’s Laws. Isaac Newton. The man, myth, the legend…while you spend your time on Facebook, Newton spent his studying the behavior of objects in MOTION.. His conclusion…anything in motion is going to follow 1 of the 3 basic . Lecture. 2. . Mechanics (M1). Why do things move?. Historical Perspective. 1. Aristotle. 350 BC. Was the final word on any scientific question. Influenced scientific thought until the end of the 17. Housekeeping. Newton’s . First Law of . Motion. Newton’s Second Law of . Motion. Newton’s Third Law of Motion. Glossary. Inertia. is the property of objects that makes them resist changes in their motion. So, the greater the mass of an object, the more inertia it has. For example, it takes a much . 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?. If you ride near the outside of a merry-go-round, do you go faster or slower than if you ride near the middle?. It depends on whether “faster” means . a faster . linear speed (= speed). , ie more . 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? . Forces. We have learned that forces . either pushes or pulls.. They come in many varieties:. Gravity & Normal. Kinetic & Static Friction. Electrical & Magnetic. Air resistance. Tension. Nuclear Force.