1. Classical Mechanics 420 J. D. Gunton Lewis Lab 418 jdg4@lehigh.edu

2. D’Alembert’s Principle and Lagrange Equations Use principle of virtual work to derive Lagrange equations for systems with holonomic constraints

3. Don’t ever give up! Physics Student PhD Program

4. Homework Set 1 Number 2

5. Double Pendulum: General Coordinates

6. Constrained motion Bead slides without friction on a vertical circular loop, in a uniform Gravitational field. Hoop rotates at a constant angular velocity.

7. Vertical Disk Rolling On Plane

8. Velocity dependent potentials: if forces derived from U via

9. Charged particle in electromagnetic field Lorentz force F=q[E+(v x B)]

10. Polar Coordinates

11. Atwood’s Machine V= -M1g x – M2 g(l-x)

12. Bead sliding on rotating straight wire, g=0

13. Constrained motion Bead slides without friction on a vertical circular loop, in a uniform Gravitational field. Hoop rotates at a constant angular velocity.

14. Problem to think about