disc6 - Discussion # Full Name: Q1. One problem for humans...

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Unformatted text preview: Discussion # Full Name: Q1. One problem for humans living in outer space is that they are apparently weightless. One way around this problem is to design a space station that spins about its center at a constant rate. This creates "artificial gravity" at the outside rim of the station. a) If the diameter of the space station is 800 m, how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.8 m/sz? b) If the space station is a waiting area for travelers going to Mars, it might be desirable to simulate the acceleration due to gravity on the Martian surface 3.7 m/sz_. How many revolutions per minute are needed in this case? 3,. ‘1 V For cirwlar molibni 0L: W r : T in 4W3 C053» we are, luck/1N3 Kw amodulcw valor,th CL . LO 3 "’ I 1/ Lg f" 40 » Discussion # Full Name: (12. You are working to pay your college tuition by performing in a travelling carnival. You ride a motorcycle inside a hollow, transparent plastics sphere. As gaining sufficient, you travel in a vertical circle with radius of 13 m. You have a mass of 70 kg and your motorcycle has mass 40 kg. ' a) What minimum speed must you have at the top of the circle if the tires ofthe motorcycle are not to lose contact with the sphere? b) At the bottom of the circle, your speed is twice the value calculated in the previous part. What is your apparent weight? 5‘) EHN; m0» k. I )1 'ieXHQ; ml;— 1 n (’2’ W8 a M M “‘9 W“ «t1 JWL um . {. \ Mum] Susie-«A : \ Lg -3r\(\c}}’ Rb m (Le , hm lNEU/l/l/ “mu SW 430‘ we \Mwi. .2 \11 \‘l: {Err—v r; 7’9 :1 WALS b) free locclxi ext «Ru WWW" A N *1 - ‘ ‘ (Wt/6" WE N‘ l: 1 if): limb r @996 3 ‘13 McmN\%w%W l? M: “W m r wound/l fiwcfic )* (\l . ‘“ “Wit-$3 M= {WE'leer L?» > Here, ,SMCJL \NC mm lucid “\{Wr wag/(wt, WE '70 5;. Vet “\iwr “ ‘-(YlC\.$S 5Q Discussion # Full Name: Q3. A curve with 120—m radius on a level road is banked at the correct angle for a speed of 20 m/s. If an automobile rounds this curve at 30 m/s, what is the minimum coefficient of static friction needed between the tires and road to revent skiddin ? ~ ' ~ \ x A. p vi: :3 0 WW”, amt/th WLM wvlhowl' \C\‘\E All: would “WU “l3 A“; “W19 ’ $6 P y CM air yams 0 wow WM Jo at 23 m]&, Jim W“ ‘6’ (gm cm «HA 7 la: [is nc’r A): l rch = m m1r l\ :1 M j 3/? COS \1 g 80 v «A LkMt Tc {$ch A15: 3% wxutslv be him ‘ x h l _‘ V2 Nogég —€F8ing' "’0 Nsma +137: COSQ ~ “in; Q ’M M5ng my 0 NSMQ +M§ NCOSQ : m .7 N 505 / jig 8mg) :K MfiwQ ‘\ ‘V i 11 : m6 x WM “Hoist :1?le (SK Jr MS. cog/D): M Wing (“igliyr M's-1A9 Jrutsch-y : Us I 663 ga/US €an ’7 a. V)“ , 5M?) aging +65”; 9‘ \ g ‘k 5’» . v . r. em ' k V X15 3"qu " r 6089 3 3145mm 7 -: \[g‘ AanflaaSEHQ r2 Q41 \. XJC: NOR 4&1ch 1 am ufi‘ma a 3H0k3&\& 6M6, <30 ‘ :9 Can 30% OM Ci Wems. €5ng 3‘“ :55“ 3”“; m 2W5, CaSQ ~HA9. fwd, is, 6145/3 ‘m 4m .. g _ ‘ _ , difficfiémp SC (DAM) TA “HAL MFM di/‘éthm, Fm+tfyrw VOU Cw 0h Aim 5ka YVOLALM we} a, M4331 Mia, \oudr M «m w WWW V“ ‘VWL %b« Mam \\0\A élo «0* Mai “W W QMQDM & 0f U, bu} New Wm M ...
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This note was uploaded on 12/14/2011 for the course PHYS 121 taught by Professor Angerson during the Fall '07 term at UMBC.

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disc6 - Discussion # Full Name: Q1. One problem for humans...

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