ch 7 hw 2

# ch 7 hw 2 - m Solution or Explanation System package...

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Web Assign Ch7 HW2 f10 (Homework) Ashlyn Baum Physics 303K, section B, Fall 2010 Instructor: Jim Chelikowsky Current Score : 14 / 18 Due : Wednesday, October 27, 2010 11:30 PM CDT 1. 0/4 points Question: MI3 7.1.P.035 A package of mass 10 kg sits at the equator of an airless asteroid of mass 3.0 10 20 kg and radius 5.5 10 5 m. We want to launch the package in such a way that it will never come back, and when it is very far from the asteroid it will be traveling with speed 166 m/s. We have a large and powerful spring whose stiffness is 1.4 10 5 N/m. How much must we compress the spring? |compression| (a positive number) = 1.968 2.68
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Unformatted text preview: m Solution or Explanation System: package + asteroid + spring. No work done by surroundings. So: Nonzero terms in initial state include gravitational potential energy and spring potential energy. Only nonzero term in final state is kinetic energy of package (because the spring is relaxed, and the package is far from the asteroid). 2. 14/14 points Question: MI3 7.1.P.033 The due date for this assignment is past. Your work can be viewed below, but no changes can be made. Page 1 of 1 Ch7 HW2 f10 11/21/2010 http://www.webassign.net/[email protected]/[email protected] .....
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