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Instructor’s informal sessions:

• Tuesday 3:30-4:20, WAG 420
• Friday 4-5pm, RLM4.102.

Lecture 24:

Collision: cont’d

• Elastic, inelastic, perfectly inelastic collisions
• Ballistic Pendulum: Hints on HW6, Q1
• Collision in 2 dimensions
• Elastic case: Hints on HW9, Q9
• Perfectly inelastic case: Hints on HW9, Q10

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)Iw2.
• Determination of I: Ring, disk …

Reminders:

• Read chapter 12 and up to chapter13.2.
• Begin doing HW9.
• Friday’s instructor’s informal session.