Physics 112
Homework #4
Fall 2005
*** Be sure to print without size reduction so the tick mark spacing on page 3 is 2.0 cm. ***
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, Q4.8, Q4.12, Q4.13, Q4.14,
(not turned in)
Q4.15, Q4.16, Q4.25, Q4.26, Q4.28, Q4.30, Q4.32, Q4.34, Q4.36
Chapter 4:
Chapter 12: Qs #12.2, 12.2, 12.3, 12.4;
Due Friday, Sept. 23 at lecture:
#4.26
[Step on it!]
#4.31
[Force is a vector]
#4.39
[Pulling Crates]
#4.50
[Weightlifting]
#12.19
[Earth's Gravity]
1.
[Tug-of-War]
Teams from two
dormitories, East and West, are having
a tug-of-war, pulling on opposite
halves of a rope of negligible mass and
weight.
In this problem, "Team East"
means
all their members + their half of
the rope
(total mass M
E
), while "Team
144424443144424443
West" means
all their members
+ their
Team West
Team East
half of the rope
(total mass M
W)
.
(a)