{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

mae2323summer09test2

# mae2323summer09test2 - 1 A 20—kg block is attached to a...

This preview shows pages 1–7. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1. A 20—kg block is attached to a spring as shown, where the spring stiffness E = 300 N/m. The coefficient of kinetic friction between surface and the block “1: =01. If the block is moved 200 mm to the right of the undeforrned ' position of the Spring and released, determine the speed of the block as it passes the position of zero spring force. 1. A 20-kg block is attached to a spring as shown, where the ”spring stiffness E = 300 N/rn. The coefficient of kinetic friction between surface and the block W = 0.1. If the block is moved 200 mm to the right of the undeforrned‘ position of-the spring and released, determine the speed of the block as it- passes the position of zero spring force. .4. ?E :: ~300x +/1,¢N' : 2:362,< N: Zo(9,81) :. Meg/V _//t¢N= 19.62” Qx: —!§X+'.‘38{= VOL" - 0U< [6-1574 +.98f)o(x_ -'= [VOW -'.2 o O z 2.. \/ .. - 75% + 981x 3 ,. " 32 2' i 1% 2. A 1-slug mass in rotates around a vertical pole in a horizontal circular path as shown. The length of the string L = 4 ft. The tension in the string is '50 lbs. Determine a) the magnitude of the tangential velocity of the mass and b) the angle 9 the string makes with respect to the pole. 3. A smooth bar rotates in the horizontal plane with constant an ular velocity (00 = 60 rpm. If the l-kg collar A is released at r = 1 meter with no radial velocity, determine its radial velocity when the collar reaches the end of the bar. we rzl-Jraam r1207“)? -. é: 6051833le “4'51 - ngaméqb Win \$609.2, w i K 3 we 9:: 0 El: -_- war: 0 , 1“ ad ‘7’ QT”: ‘(Vm VG ‘2 O :2, C}:— r‘e " £4 :Vrdi“ 5H ctr VT 5 3 L 2, ‘2' l 2- 2, ferU/r: ardhr‘: Q:{:(Bg)[3_l] 2 c '2. ﬂ 7.. 3. A smooth bar rotates in the horizontal plane with constant angular velocity (00 = 60 rpm. If the l-kg collar A is released at r = 1 meter with no radial velocity, determine its radial velocity when the collar reaches the end of the bar. From Can Sarvg’tzén 64 energy T + V! + Ut—7. : T2. + v2. 0 = : 0 EV 2E“ MI“! 9 we 6 MIL. r€V bo 5"" : Z'ﬁ’ TIM/m e... I 7' l 37’ |":: ”NV :— - (I)[(”9 : 19.74— N M : O V Z Ul-L : O V?" v o n l . 2 f 2' l2 '5 Z "(H/4:1 4' 1M r,’ (00. mmmsmteimtmﬁeﬁhﬁnmmmwmﬂmmﬁmmgxwm '._. d. An artificial satellite is launched from point B on the equator of the earth by a rocket and is inserted into orbit with a perigee altitude of 2000 km. The apogee altitude is 4000 km. Determine: a) the eccentricity e of the orbit, b) velocity vp at perigee, c) the corresponding apogee velocity Va, d) velocity at point C where the altitude of the satellite is 2500 km, Q: ESYI + 4000 = 10,371 Km “ 2500km VP -‘~ 53’“ + Zooo : 3,311 km up P = (9.4". "3 : 9,37: Km 2. V3: %(i+e) h3Vplf‘, h ” 1*! ZOOOkm V7“- emswé (51975 Xto)(l-£ e) P " 337! ([0003 VP : 7zeom/5' h: 5.0777“: M2 8 = «'06? f—f 1 Le "— I. 907‘; liq :- i;€ : l 239' to. \+e VP . i—t-e VA 2 Sage m/s l' Gm ._ .2 iVQ: Tje+2€w50+z ¢_ ‘ 7' a lie - _, i VG — git? J(.i067) '1" Z(«‘067)C®3 C(g "if ‘5: 7X 69% i [ TL I ‘ 35:7100003 w; 5. The pendulum ball at the end of a 2 meter long rod has a mass of 2 kg. The rod and Spring have negligible mass, while the spring has a stiffness k = 10 kN/rn. The pendulum is released ﬁom rest when 8 = 75". Use the energy method to determine a) the tension in the rod the instant it strikes the spring, and b) the maximum deﬂection of the spring. Ear +£3— VCioc-z'l‘xf jet—6:: bedﬁre ‘L'i— S’i‘r‘qus +119 586an T + V! + q“; 2 TL '4‘ V2, 0 + 2/93001 — 20.05 75") 1.01) VL ll Fir "Eff "Eel/6154 ta; ”Hag WEE; ff 9:0 I P *iZFr :- P —- 203.813 :- my)Z \ ""3539; E 2. N P: “3.52 + 2 (53%) P 3 43-70 dam) E z. E ESE—M TEA-{.POSIFE‘IO'E'I a; GEO “FE—ti S {Mg Win E 5 T1+\/L+UZ_3 :: “ﬂaw/3, 7. f ‘1- ’éMVz-l-O-EOCO-l—‘ka L 27.02 2 €000 x x : .0762 w. ...
View Full Document

{[ snackBarMessage ]}

### Page1 / 7

mae2323summer09test2 - 1 A 20—kg block is attached to a...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online