Repeat Examinations for Mechanics 1 - MECH6029, Cork Institute of Technology, 2010, Exams of Mechanics

Download Repeat Examinations for Mechanics 1 - MECH6029, Cork Institute of Technology, 2010 and more Exams Mechanics in PDF only on Docsity! CORK INSTITUTE OF TECHNOLOGY INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ Semester 2 Repeat Examinations 2009/10 Module Code: MECH6029 School: Mechanical & Process Engineering Programme Title: Bachelor of Engineering in Mechanical Engineering Bachelor of Engineering in Biomedical Engineering Programme Code: EMECH_7_Y1 EBIME_7_Y1 Module Title: Mechanics 1 External Examiner(s): Mr. A. Bateman and Dr. D. FitzPatrick Internal Examiner(s): Ms. M. Kavanagh, Mr. Michael Walsh Instructions: Answer any 4 questions. Please tick off which questions you attempt on the front of the script. Duration: 2 hours Sitting: Autumn 2010 Requirements for this examination: Log Tables Note to Candidates: Please check the Programme Title and the Module Title to ensure that you are attempting the correct examination. If in doubt please contact an Invigilator. Q1 A force of 600N acting parallel to a plane inclined at 20º to the horizontal is required to move a mass of 50kg up the plane. Find (a) The coefficient of friction between the 2 surfaces. (15 marks) (b) The force parallel to the plane required to pull the mass down at a steady velocity. (10 marks) Include a sketch. Assume kineticstatic   Q2 A train has a constant acceleration of 1m/s 2 . Find a) The time taken for it to increase it’s velocity from 20km/hr to 50km/hr. (15 marks) b) The distance travelled during that time. (10 marks) Q3 (a) Sketch and label a typical load v’s extension graph for mild steel. (7 marks) (b) A pipe with outside diameter of 50mm and internal diameter of 45mm is subjected to a compressive load of 50kN. Find (i) The stress the pipe is subjected to. (6 marks) (ii) The strain the pipe is under if it’s original length is 100mm and it is compressed by 0.05mm. (6 marks) (iii) The Modulus of elasticity for the pipe material. (6 marks)