Your Name_____________________________Section______
Due 4:00PM Thursday Nov. 20, 2003
Topics: Universal Gravity
Any following problems designated with a bold number indicate problems from Young
and Freedman 11th edition.
Note: It may help to do some of the Mastering Physics assignment #12 on Universal
Gravitation and Oscillators before doing some of these problems.
1. 12.23 Hint: Calculate the orbiting speed first and picture what would happen if you
started to walk slowly, gradually speeding up.
b) You could escape by jumping straight up. On earth, a person’s jumping ability is
measured by their “vertical leap” – the distance their c of m rises after they jump.
What vertical leap on earth corresponds to escape velocity on Dactyl?
2. 12.24
3. 12.46
4. 12.68
e) How many times as much energy (as your answer to part d) is required to actually
make this payload dock smoothly with the space station?
5. 12.70
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