AEM2012_Exam2_Spring2008_Soln - AEM 2012 — Examination#2...

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

View Full Document Right Arrow Icon
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: AEM 2012 — Examination #2 — Spring 2008 Problem #1: Mass m is placed in front of a linear spring at A and “sho " through loop BC. The spring is compressed a distance A from its unstretched length and the force that the track exerts on the mass at the top of the loop (point C) is at least two—thirds of the weight of the mass. The entire track is smooth. What is the minimum value for the spring constant k? Express your answer in terms of the compression distance A, the gravitational constant g, the mass m, and the loop radius R. Hen FfiO a; mass Q C: A % l 64 M‘aen i4: my...” ('13 NM. R a - . __ . L13 éCZ) 1 MVL cam‘ni e L 2, " timer " m F=mm V 2.. ‘2 F“:- N +MZ :— M .5; R. >, 3-. N 3 W3 (3) 0r Vol >, S—L‘R CH3. AEM 2012 — Examination #2 — Spring 2008 Problem #2: A 10 gram bullet is fired with an initial speed of 260 meters/ second. A 2 kilogram block is initially at rest until the bullet hits and passes through the block. After the bullet penetrates the block, the block slides a distance of 0.2 meters along the floor until coming to rest (see figure below). The coefficient of kinetic fiiction between the block and the floor is M = 0.3. Find the exit speed of the bullet after piercing the block. Mb: ‘0‘}: .D\ qu M3 = QKOX Vb -.-: aw ”/5 F————0.2m—————>i AEM 2012 — Examination #2 — Spring 2008 Problem #3: A 28-g steel-jacketed bullet is fired with a velocity of 650 m/s toward a steel 5:30 mm plate and ricochets along path CD with a [i f velocity 500 m/s. Knowing that the bullet “ .t k E {a E leaves a 50-mm scratch on the surface of the a K E ‘ . D plate and assuming that it has an average 900 , “ e \\ E (w i» a“ ”‘ speed of 600 m/s While in contact With the r“ ‘e K J j; , gggggg mt plate, determine the magnitude and direction , , , i of the impulsive force exerted by the plate on - the bullet. Implu —- $4me xm Ballet 1 c /. v0 5 ~ A y M 3 u. A" 8 ohm. - LoSO‘: Q 223° 6 s' 20‘? \/ 5mm 0°? ‘ \o"c yfl— b ca: 1~ m a ~°= 5 (cm 1 +$m «i , . V. 0- LV\ I i .h 1 ° ° -‘ 1 : m VA Cars 2.0 + j F1 fie =- MVSDLO$lD (2) (VW\‘ h \l a D 'L t ’ SOMM ' Y‘A $4 245 Sn“ . O -\ J‘ A " 4v 3 fix“; = m vwssmm (37, N mom’s) a "‘ . cEW‘ avg ‘L 2‘. i33>¢l0 s _‘ \ a .____.=__________———-:- (a!) => (YANG = :‘g 7'}ch = __L [wv‘ Lcs\o°- MVA 6982.0] 1: ‘l; D .2: - E‘ifl’i Kkl i: (3) =9 LE )Mo = ‘1‘: 5 E5 Ab : :‘E. [WVDE’MOO 4.va $1‘AZO° 2'. “>3.“ \Lh" a fa \EE -_- (Ekfitfilm 4: New»! tyranny»: 9b I039“ o 9 = {gm-(3.1“): Loam ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern