Physics 112
Homework #4
Fall 2006
Read:
Chap. 4 (all); Chap. 12, sections intro., 12.1, 12.2
For discussion:
Chapter 4:
Qs #Q4.1, Q4.2, Q4.3, Q4.6, Q4.7, Q4.12, Q4.13,
Q4.14, Q4.15(not turned in) Q4.21, Q4.25, Q4.26, Q4.28, Q4.30, Q4.32, Q4.34,
Q4.36
Chapter 4:
Es & Ps #4.1, 4.9, 4.19, 4.21, 4.27, 4.35, 4.37, 4.51
Chapter 12:
Qs #12.2, 12.2, 12.3, 12.4; Es & Ps #12.1, 12.5, 12.19
Due Friday, Sep 22nd at lecture:
#4.33
[Force is a vector] #4.26 [Step on it!]
#4.50
[Weightlifting]
#12.15 [Earth's Gravity]
1.
[Finite-Difference Motion Analysis using a Strobe Diagram]
The strobe
diagram on the next page shows the motion of a space probe as it passes by a
planet (not shown). The probe enters the diagram at the bottom by the arrow,
and its subsequent positions are shown at equal time intervals of
Δ
t = 85 minutes.
The tick marks along the left and bottom edges of the diagram are spaced by
70000 km.
(a)