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Informal sessions:

o Tu 3:30-4:20pm, RAS 218;

o Fri 4-4:50pm, ECJ 1.204.

Lecture 24: Collisions and motion of rigid body

Collision: cont’d

• Elastic, inelastic, perfectly inelastic collisions
• Ballistic Pendulum
• Collision in 2 dimensions

Motion of rigid body

• Kinematic variables: Angular quantities: q= s/r, w=v/r, a=a/r.
• Kinetic energy and moment of inertia: K=(1/2)I w^2
• Determination of I: Ring, disk …

Reminders:

• Read chapter, 12 and up to chapter13.2.
• After today’s lecture should be able to do ~3/4 problems in HW9.
• Check your Quest-announcement: 2 questions in HW9 have been killed.
• Friday’s instructor’s informal session, HW9

From this point on, your clicker record in Quest is expected work properly.

• Please check your Quest-record against your record in your classnotes on a regular basis.
• If you have any concerns on your record, please contact Matt.

iq (inclass quiz) number and lecture correspondence:

Lec #	17	18	19	20	21	22	23	24
iq #	13	14	15	16	17	18	19	20