PPT-An object will remain in rotational equilibrium if its center of mass is above the area

What determines whether an object will rotate when a force acts on it Why doesnt the Leaning Tower of Pisa rotate and topple over What maneuvers does a falling cat make to land on its feet . 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.. We consider the rotation of . rigid bodies. . A rigid body is an extended object (as opposed to a point object) in which the mass is distributed spatially.. Where should a force be applied to make it . - Class. . 20. Today:. Gravitational Torque. Rotational Kinetic Energy. Rolling without Slipping. Equilibrium with Rotation. Rotation Vectors. Angular Momentum. Pre-class reading quiz on Chapter 12. We’ve seen that the translational motion of a complicated object can be accounted for by the motion of the center of mass. Now, we turn to all the other motions with respect to coordinate system moving with the center of mass. Physics 1, NTC. Angular Motion, General Notes. When a rigid object rotates about a fixed axis in a given time interval, every portion on the object rotates through the same angle in a given time interval and has the same angular speed and the same angular acceleration.. 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?. Torque. Center of Mass. When analyzing the motion of an extended object, we treat the entire object as if its mass were contained in a single point, known as the object’s . center of mass (CM).. Mathematically, the CM of an object is the weighted average of the location of the mass in an object.. and rotational inertia. 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 . 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 . HTHS AP Physics 1. M. Dimler. Torque. Torque. is a force that causes an object to turn. Torque. - Force directed perpendicular to the “lever arm” of an object that has the ability to rotate the object around a fulcrum or axis. . Rotational Equilibrium and Dynamics Chapter 8 Magnitude of a Torque What is a torque? A quantity that measures the ability of a force to rotate an object around some axis. r  Example… Imagine opening a door around a hinge. Rotational Motion – Torque and Angular Momentum AP Physics 1 Torque Forces with equal strength will have different effects on a swinging door. The ability of a force to cause rotation depends Physics CNameANSWER KEYAP Review PacketLinear and angular analogsLinearRotationx positionx displacementvvelocityaTtangential accelerationVectors in rotational motionUse the right hand rule to determin