Week 18

Reading: PSE Chap 13 ( Simple harmonic motion) and 16, waves
Some fascinating resources:

Homework Problems:
Just for practice for the final exam on Friday, Dec. 23.
  1. Mass on a spring: A block of mass M = 1 kg is placed on a frictionless table. It is attached to a spring whose spring constant is 5 N/meter. The spring is compressed by 5 cm and then released at time t = 0.
    • What is the angular frequency of the mass as it oscillates back and forth across the surface of the table? (omega = sqrt(5) rad/sec)
    • Write down a mathematical function that describes the motion of the mass as a function of time. (x = 5cm * cos(omega * t))
    • Make a plot of this function and label your axes appropriately.
    • What are the kinetic energy and potential energies of the mass-spring system at t = 1 second.
    • Wha tis the total energy of the mass-spring system while it is oscillating? (E = 2/160 joules)
General College Physics