PPT-Chapter 9: Rotational Motion

2016 Pearson Education Inc Goals for Chapter 9 To study angular velocity and angular acceleration To examine rotation with constant angular acceleration To understand the relationship between linear and angular quantities. And 57375en 57375ere Were None meets the standard for Range of Reading and Level of Text Complexity for grade 8 Its structure pacing and universal appeal make it an appropriate reading choice for reluctant readers 57375e book also o57373ers students U. se the points G(2, -4) and H(-6, -6) to answer the following:. 1.. Find the slope of . 2. . Find the midpoint of . 3. . Find GH.  . Warm Up. Objectives. Identify and draw rotations. .. Identify and describe symmetry in geometric figures. 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. 10.1 – Angular Position (. θ. ). In linear (or translational) kinematics we looked at the position of an object (. Δx. , . Δy. , . Δd. …). We started at a reference point position (x. i. ) and our definition of position relied on how far away from that position we are.. 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?. Ellen Akers. Radians and Degrees. In degrees, once around a circle is 360˚. In radians, once around a circle is 2. π. A radian measures a distance around an arc equal to the length of the arc’s radius. © 2015 Pearson Education, Inc.. This lecture will help you understand:. Circular Motion . Rotational Inertia. Torque. Center of Mass and Center of Gravity. Centripetal Force. Centrifugal Force. Rotating Reference Frames. 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 rotate?. Infrared (Vibrational). Raman (Rotational & Vibrational) . Texts. “Physical Chemistry”, 6th edition, . Atkins. “Fundamentals of Molecular Spectroscopy”, 4th edition, . Banwell & McCash. 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. . Angular Motion.  .  .  .  .  .  . 1.  .  .  .  .  .  .  .  . End Slide.  .  .  .  .  .  .  .  .  . Angular Motion.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . Key Concepts. For each translational motion quantity (position, velocity, acceleration, force, mass, momentum, . kinetic energy). there is a rotational quantity. Same equations apply. . Angular velocity (sign!) and . Physics CNameANSWER KEYAP Review PacketLinear and angular analogsLinearRotationx positionx displacementvvelocityaTtangential accelerationVectors in rotational motionUse the right hand rule to determin Kinetic Energy. The kinetic energy of the center of mass of an object moving through a linear distance is called translational kinetic energy. . KE = ½ mv. 2. As an object rotates it experiences a type of kinetic energy known as rotational kinetic energy.