Physics... Chapter 9: Circular Motion,
Chapter 10: Center of Gravity, &
Chapter 11: Rotational Mechanics

Chapter 9 to 11 Homework Solutions

Below are the answers for selected homework assignments. Use them as a guide to make sure you are doing the problems correctly.A word of caution: Turning in only the answers below will result in NO CREDIT. You must show your work to receive full credit for homework assignments.

Chapter 9 Homework
Problem / Answer / Problem / Answer
#1 / 1.9 m/s / #10 / 3.1 x 107 m/s
#2 / 1.5 m/s / 9.9 x 1011 m/s2
1.2 m/s / 1.6 x 10-15 N
#3 / .63 m / #11 / 464 m/s
.52 m/s / 2.4 N
#4 / 10.9 m/s / 686 N
#5 / Same . . . / #12 / 100 m/s
464 m/s / 4704 N
Slower . . . / #13 / 39 m/s2
#6 / .29 m / #14 / 12,940 N
#7 / 204 m/s2 / 55 m/s
1430 N / #15 / 6040 N
#8 / 5.0 m/s / 8360 N
32 m/s2 / #16 / 19,800 N
6.3 N / 23.5 m/s
#9 / 6.9 m/s / 15,400 N
23.5 m/s
Chapter 11 Homework
Problem / Answer / Problem / Answer
#1 / 2.0 N / #8 / 9.7 x 1037 kg m2
#2 / 4.8 N m / #9 / .032 kg m2
#3 / 1 N m / .016 kg m2
4 N / Solid . . .
#4 / Ex: 1 m, .25 m / #10 / .012 kg m2
.98 N m / .048 kg m2
#5 / 3.2 cm / The end . . .
7.5 cm / #11 / 42.7 kg m2
14 cm / 10.7 kg m2
6.7 cm / #12 / 4.08 x 106 kg m2/s
3.14 N m / #13 / 2.8 x 1038 kg m2/s
.735 N m / 2970 m/s
4.12 N m / #14 / 1.68 kg m2/s
1.96 N m / 5.6 m/s
#6 / Diagram B . . . / #15 / 11.25 kg m2/s
Diagram A . . . / 5.8 m/s
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