# Exam_3 - Exam 3 Problem 1 (40 pts) At a given instant, rod...

This preview shows pages 1–3. Sign up to view the full content.

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: Exam 3 Problem 1 (40 pts) At a given instant, rod AB has the angular motions shown. Determine the angular velocity . . ‘ ' 'a of rod CD at this instant.The collar at C is free to slide along rod AB. Given: (“coma-WK pod» sliaLL “sew/“9‘7 - I) “(1) Free Bod Dia ram Solution 1 0 ./ r x ——> _ _\, _‘ _\ (We : A e (JABX rC/A (Iva/AX X7} O -——3 \\'7 v» ___> IV¢ *’ 2% ’L 05¢!) HAD ‘3) Us 3 —-’3 ,\ CK>CD X ‘ QR]: A ’f (—5123x(22§ + 1/ch 2 “©0D3 + M39)th = 403 +4/c/ﬁt NAME(print) Period Exam 3 ‘ Problem 2 (30 pts) The hoop is cast on the rough surface such that it has an angular velocity (0 = 4 rad/s and an angular acceleration a = 5 rad/s2 . Also, its center has a velocity of v0 = 5 m/s and a deceleration a0 = 2 m/sz. Determine the acceleration of point B at this instant. w = 4 rad Given: A -\ Hoop .‘m Mohow Find: '3 at; __ S stem Sketch Solution: \o‘): L/rncl/s \ (X: 5WM/ 5 ‘5 r —3 ——-§ —3 'L _._ )Vozst/e as 1 Q0 + do“ X FB/ - 0508 V; wz'w o /o .5 _ / A (A \ ' 6 0m ' L’ZL\ + ('kax (0,3(1054/52‘ _O.3J,,, c/53) N. .ob —' (6/\z(0.3co\$L/Jff 'O,35,\,, 5/455» a?” : ‘Z‘A' ’ "06\$ ' l-Oéz / 3.361: + 3.393 ‘- ‘é.q5£ + ‘Z_33§ M/jt 0/1 OHS" [gt/5142.331 as : 6.8é “4/51 NAMEGn‘int) Period —_—__— 4 Exam 3 Problem 3 (30 pts) The ﬁgure shows the internal gearing of a “spinner” used for drilling wells. With constant angular acceleration, the motor M rotates the shaft S to 100 rev/min in t = 2 seconds starting from rest. Determine the angular acceleration of the drill-pipe connection D and the number of revolutions it makes during the 2-sec start up. D Given. gram 8w a/Cowsawv x. M =5 [00 W/Mm M Z “a 5hr“ gnaw/1 PC5+ “ *1“ «XD 13 #006 mmia’rmws a: b 23% ‘ " aé‘krl Z, stow-0‘5 S stem Sketch (~30 T O I GO : O ODM : RV/Mv‘n 100 new lM arr ' 905 [Few QM —' 1'0. C/ 1} r%c% «v VC/ochx/ 06c ,4 MUM be. 1‘44). 5am 9* 4/: gr . 7. CL)er QM r~\ 7' CQDFD (10.4? “‘d/QﬁoawA = < my. I5M3 as.) : ax. mg WV; For T): O §< 0A2M+Mt 4.1573 : o<D< as) . . ﬂan/5 max new ; aéés e ? "—/./3 rod 5:} Z77 /6r we ml. 9 04695 Ramona“ NAME(print) Period 5 ...
View Full Document

## This note was uploaded on 02/09/2012 for the course MECHANICAL EM232 taught by Professor Zollars during the Spring '11 term at Naval Academy.

### Page1 / 3

Exam_3 - Exam 3 Problem 1 (40 pts) At a given instant, rod...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online