Matter Problem Rubncav1 Category Descriptions: Set up the Problem The goal here
ID: 1593003 • Letter: M
Question
Matter Problem Rubncav1 Category Descriptions: Set up the Problem The goal here is to be clear on your waning place and your end goal, before you write a bunch of math down Re-tact the problem in your own worth The hold only Lake a sentence or two. and should NOT copy all amber given in the original problem Identify the quantity that it the pal of the problem (For example. the final velocity of a projectile yurt before it hit die pound.) Draw a duped(s) You'll always need at Catt a sample picture of the At other types of diagrams get introduction. The force diagram you'll add that in addition to the has picture diagram label the diagram with appropriate car tablet For example, you might hate a pox length r for a muting object, etc 2. Known and Unknowns The goal here it to take an incensory of what you know, and what you'll Kill need lo find to complete the problem a all the ample physical quantities relevant to this problem (know net and pee value the computable physical quantities you will need to twit the problem (unknown). 3. Plan Solution 3a. Concepts Here, you want to combine your physic knowledge with what you know about the problem (act out m top I and 2. ab over and plan how to get from Mart to fiche a Identify the phyucal principles, con ptv and equations that arc need to toke the problem (For example, "fear it courted in tint stem. to E_t = E_f ...") Arrange Katie equations in order and explain with worth how each h to be used (For example. meant mgk, for ) If you find any muting knows or unknown ns along the way. add them to your from step 2. 3b. Mathematics Here, you take your plan and do out the math, rearranging and in equations, etc Together with your conceptual plan, art thud be cay to follow the logic of your calculations from art to finish 4. Execute and evaluate If you haven't already plugged in numbers, do it here. Clearly indicate your final rower. including units. Cheek that your is plausible- for example, if you're voicing for time and got a negative number is My went wrung C- If there arc any extra questions posed by the problem (for example. "It your car over the ). answer them here Problem #4b Do this problem on your own and turn it in al the beginning of next Friday's class (due 2/12/16). In addition to all the work your team has done on space stations in planetary orbit, you now need to help design a station for deep space, far away from any planets or stars. The plan is to build a large wheel-like structure w here people can live and work in the nm To create "artificial gravity" without any large objects nearby, the proposed station must rotate on its axis To balance living conditions with safety concerns (like material stresses), you want to know at what rate a station 200 meters in diameter would have to rotate to create "gravity" equal to 0.7 that at the surface of Firth How fast does it spin, and how long would it take to make a complete rotation? Your answer must he organized, clear, and complete. See the mastery problem rubric for a reminder of what should be included for a perfect score.Explanation / Answer
centripetal acc. = w^2 R
0.7 x 9.81 = w^2 ( 100 )
w = 0.262 rad/s ......Ans
time needed to complete one revolution.
T = 2pi / w = 2pi / 0.262 = 23.98 sec