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KULIAH I MEKANIKA TEKNIK TI PENDAHULUAN

Apa itu Mekanika?. Cabang ilmu fisika yang berbicara tentang keadaan diam atau geraknya benda-benda yang mengalami kerja atau aksi gaya. Buku apa yang dipakai?. R. C. Hibbeler, Engineering Mechanics, 7th - 10th Edition, Person Prentice-HallF. P. Beer and E. R. Johnston Jr., Vector Mechanics for Engineers: Statics, SI Metric Edition, Mcgraw-hill, 3rd EditionR. C. Hibbeler, Mechanics of Material, 3th Edition, Person Prentice-Hall dll.

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KULIAH I MEKANIKA TEKNIK TI PENDAHULUAN

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    1. KULIAH I MEKANIKA TEKNIK TI PENDAHULUAN OLEH: ALIEF WIKARTA, ST JURUSAN TEKNIK MESIN, FTI – ITS SURABAYA, 2007

    2. Apa itu Mekanika? Cabang ilmu fisika yang berbicara tentang keadaan diam atau geraknya benda-benda yang mengalami kerja atau aksi gaya

    3. Buku apa yang dipakai? R. C. Hibbeler, Engineering Mechanics, 7th - 10th Edition, Person Prentice-Hall F. P. Beer and E. R. Johnston Jr., Vector Mechanics for Engineers: Statics, SI Metric Edition, Mcgraw-hill, 3rd Edition R. C. Hibbeler, Mechanics of Material, 3th Edition, Person Prentice-Hall dll

    4. Bagaimana evaluasinya ? Tugas-Kuis : 25 % UTS : 30 % UAS : 45 % Tidak mentolerir segala bentuk kecurangan Tapi tetap boleh cross check

    5. Penjelasan TUGAS Dikerjakan pada kertas A4 Tulis nama dan NRP di sebelah kanan atas, serta tanggal dan tugas ke berapa Silahkan mengerjakan soal apa saja yang berkaitan dengan materi yang disampaikan Silahkan mengerjakan berapa pun soal yang sanggup anda selesaikan Soal-soal harus dari buku yang disepakati Mencantumkan judul buku, pengarang, dan nomer soal yang dikerjakan, plus halaman buku

    6. Apa saja yang dipelajari? Keseimbangan partikel Keseimbangan benda tegar Diagram gaya normal, diagram gaya geser, dan diagram momen Konsep tegangan Momen inersia dan momen polar Teori kegagalan statis

    7. Apa pentingnya mekanika (statik) / keseimbangan ?

    8. Apa perbedaan partikel dan benda tegar? Particle: A very small amount of matter which may be assumed to occupy a single point in space. Rigid body: A combination of a large number of particles occupying fixed position with respect to each other.

    9. Apa perbedaan Partikel dan Benda Tegar ? Partikel: Mempunyai suatu massa namun ukurannya dapat diabaikan, sehingga geometri benda tidak akan terlibat dalam analisis masalah Benda Tegar: Kombinasi sejumlah partikel yang mana semua partikel berada pada suatu jarak tetap terhadap satu dengan yang lain

    10. Contoh Partikel

    11. Contoh Benda Tegar

    12. Review Sistem Satuan

    13. Apa yang harus dilakukan supaya Mekanika Teknik menjadi mudah ? Banyak dan sering menyelesaikan soal-soal

    15. Mainly explain the three steps using the example .Mainly explain the three steps using the example .

    16. Fundamental Principles The parallelogram law for the addition of forces: Two forces acting on a particle can be replaced by a single force, called resultant, obtained by drawing the diagonal of the parallelogram which has sides equal to the given forces

    17. Fundamental Principles (cont’) The principle of transmissibility: A force acting at a point of a rigid body can be replaced by a force of the the same magnitude and same direction, but acting on at a different point on the line of action

    18. APPLICATION OF VECTOR ADDITION

    19. Addition of Vectors

    20. Sample Problem

    21. Sample Problem (cont’)

    22. ADDITION OF SEVERAL VECTORS Step 3 is to find the magnitude and angle of the resultant vector.

    23. Example of this process,

    24. You can also represent a 2-D vector with a magnitude and angle.

    28. Sample Problem

    29. Sample Problem (cont’)

    30. Answers: 1.C 2.AAnswers: 1.C 2.A

    31. READING QUIZ 3. Which one of the following is a scalar quantity? A) Force B) Position C) Mass D) Velocity Answers: 1. C 2. DAnswers: 1. C 2. D

    32. CONCEPT QUIZ 5. Can you resolve a 2-D vector along two directions, which are not at 90° to each other? A) Yes, but not uniquely. B) No. C) Yes, uniquely. 6. Can you resolve a 2-D vector along three directions (say at 0, 60, and 120°)? A) Yes, but not uniquely. B) No. C) Yes, uniquely. Answers: 1. C 2. AAnswers: 1. C 2. A

    33. Answers: 1. C 2. C Answers: 1. C 2. C

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