1. Physics of Astronomy Tuesday, winter week 2 (17.Jan.06)
Physics: Kinematics
Math-A: Giancoli Ch.4 - Dynamics
Math-B: Giancoli Ch.9-11 review
Minilectures and HW setup
Looking ahead

2. Phys.A: Giancoli Ch.4: Newton’s Laws
N1: Every body continues in its state of rest or of uniform speed in a straight line as long as no force acts on it.
N2: F=ma (Ex. 4-15) FORCES cause ACCELERATION
N3: Whenever one object exerts a force on a second object, the second exerts an equal and opposite force on the first.
Each team choose one:
#5, 21, 26, 34, 35, 36, 39, 40, 66, 67, 72, 75, 78

3. Phys.A: Giancoli Ch.4: Free body diagrams
Draw all forces and accelerations
Separate components
Write SF=ma in each direction
Solve
Problem 40 (p.101) Problem (p.104)

4. Phys.A: Giancoli Ch.4: Newton’s Laws

5. Looking ahead

6. Phys.B: Giancoli Ch.9-11: Momenta
Forces change linear momenta Torques change angular momenta
F=dp/dt (= ma) where t=dL/dt = r F = Ia where
Linear momentum p = mv is Angular momentum L = mvr = Iw is
conserved if F= conserved if t=0
s=Rq, v=Rw, atan=Ra, I = mr2
Klin=p2/(2m) = ½ Mv2 Kang=L2/(2I) = ½ Iw2
Ex: Rocket propulsion, center of mass Ex: Kepler’s 2d law
Each team choose one:
Ch.9 F=dp/dt (p.231) # 5, 11, 17, 53, 69, 78, 99
Ch.10 t=dL/dt (p.270) # 6, 13, 17, 28, 32, 42, 53, 57, 86
Ch.11 t=r F (p.295) #6-8, 10, 18, 29, 37, 38, 49, 54, 63