5.Evaluations Homework,presentation,course report and examinations Chapter 5 Rotation of Rigid Bodies 1.Teaching objectives Toleam and apply the dynamical of rotation 2.Focus and/or Difficulties Decomposition of translation motion and rotation,analysis of forces and torques,judgement of whether the momentum,angular momentum and mechanical energy are conserved or not,when translational motion rotation and collision are combined 3.Teaching contents Angular velocity and acceleration;the motion of a rigid body:angular momentum and torque, Dynamics of rotation about an axis,brief introduction of symmetry and conservation laws, gyroscope 4.Teaching method Lecture plus short assigned presentations by students 5.Evaluations Homework,presentation,course report and examinations Chapter6 Elasticity 1.Teaching objectives To learn the quantities describing the elastic deformation. 2.Focus and/or Difficulties The expressions of elastic potential energy density 3.Teaching contents Tension and compression;bulk stress and strain;shear deformation,bending and torsion. 4.Teaching method Self-taught 5.Evaluations Course report and examinations Chapter 7 Gravitation 1.Teaching objectives5 5. Evaluations Homework, presentation, course report and examinations Chapter 5 Rotation of Rigid Bodies 1. Teaching objectives To learn and apply the dynamical equations of rotation. 2. Focus and/or Difficulties Decomposition of translation motion and rotation; analysis of forces and torques; judgement of whether the momentum, angular momentum and mechanical energy are conserved or not, when translational motion, rotation and collision are combined. 3. Teaching contents Angular velocity and acceleration; the motion of a rigid body; angular momentum and torque; Dynamics of rotation about an axis; brief introduction of symmetry and conservation laws; gyroscope 4. Teaching method Lecture plus short assigned presentations by students 5. Evaluations Homework, presentation, course report and examinations Chapter 6 Elasticity 1. Teaching objectives To learn the quantities describing the elastic deformation. 2. Focus and/or Difficulties The expressions of elastic potential energy density. 3. Teaching contents Tension and compression; bulk stress and strain; shear deformation; bending and torsion; elasticity and plasticity. 4. Teaching method Self-taught 5. Evaluations Course report and examinations Chapter 7 Gravitation 1. Teaching objectives