10TH.WEEK MIDTERM GROUP 2

# 10TH.WEEK MIDTERM GROUP 2 - FACULTY OF ENGINEERING...

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FACULTY OF ENGINEERING SPECIALIZED SCIENTIFIC PROGRAMS LECTURERS : PROF. DR. FAROUK ELBARKI –DR. SAAD ALSAFI ALL DEPARTMENTS COURSE : MECHANICS 2 (DYNAMICS) 2 ND . SEMESTER COURSECODE. : MP104 SPRING 2008 10 TH .WEEK MIDTERM GROUP : 2 TIME ALLOWED : 90 MIN. NAME: PR.NO. : SEC: GROUP: SOLUTION ANSWER THE FOLLOWING QUESTIONS : ( 2 s / m 10 g = ) A (10- kg) block (C) moves along a smooth inclined plane and is subjected to a variable force ( P ) . The block (C) is attached to a rope which connects another ( 20 – kg) block (E) and passes along a smooth fixed pulley (D) , while the block (E) is subjected to a horizontal force ( 800 N) and a force ( Q = 100 k ) , where ( k ) is a positive constant . The block ( E ) moves downwards along a rough vertical plane ( 1 . 0 = μ ). The block (C) starts from point A. where x A = 20 m , to move upwards with initial velocity v A = 45 m / s . If the acceleration of the block (E) is varying according to the relation : a = 6( t - 4 ) m / s 2 and the system is designed to move only for 4 seconds :

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10TH.WEEK MIDTERM GROUP 2 - FACULTY OF ENGINEERING...

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