- Arts & Culture 5939
- Business & Economics 689
- Computers 310
- Dictionaries & Encyclopedias 81
- Education & Science 71768
- Abstracts 252
- Astrology 4
- Astronomy 1
- Biology 8
- Chemistry 2021
- Coursework 15546
- Culture 9
- Diplomas 411
- Drawings 574
- Ecology 6
- Economy 83
- English 75
- Ethics, Aesthetics 3
- For Education Students 14480
- Foreign Languages 11
- Geography 3
- Geology 1
- History 89
- Maps & Atlases 5
- Mathematics 13856
- Musical Literature 2
- Pedagogics 19
- Philosophy 23
- Physics 14191
- Political Science 5
- Practical Work 101
- Psychology 60
- Religion 4
- Russian and culture of speech 8
- School Textbooks 7
- Sexology 42
- Sociology 9
- Summaries, Cribs 87
- Test Answers 150
- Tests 9129
- Textbooks for Colleges and Universities 32
- Theses 24
- To Help Graduate Students 14
- To Help the Entrant 36
- Vetting 364
- Works 13
- Информатика 10
- Engineering 3058
- Fiction 696
- House, Family & Entertainment 107
- Law 132
- Website Promotion 71
Solution D12-95 (Figure D12.9 condition 5 SM Targ 1989)
Uploaded: 11.04.2018
Content: d12-95_1989.rar 32,11 kB
Seller will give you a gift certificate in the amount of
Product description
Solution D12-95 (Figure D12.9 condition 5 SM Targ 1989)
The mechanism located in the vertical plane (Fig. D12.0 - D12.9) consists of stepped wheels 1 and 2 with radii R1 = 0.4 m, r1 = 0.2 m, R2 = 0.5 m, r2 = 0.3 m, having fixed axis of rotation; a homogeneous rod 3 of length l = 1.2 m, fixed by a hinge at one of the ends; cargo 4 and 5, suspended to the threads wound on the wheels. On the rod, the distance AB = 2l / 3. The rod 3 is connected to the wheel 2 by a weightless rod 6. The wheels 1 and 2 are either meshed (Figure 0-4), or connected by a weightless rod 7 (Figure 5-9). The springs are attached to the wheels and the rod 3. In Table. D12 are the masses mi of bodies (kg) and the stiffness coefficients ci of the springs (N / m). The dashes in the columns of the table mean that the corresponding bodies or springs do not enter the system (in the drawing, these bodies and springs are not represented); as a result, in each specific variant, a fairly simple mechanism is obtained, containing three or even two bodies. Rod 6 or 7 is part of the mechanism, when it includes both bodies connected by this rod. In the positions depicted in the figures, the mechanism is in equilibrium. Determine the frequency and period of small oscillations of the system near the equilibrium position. Find also what is the static elongation (compression) of the spring λst in the equilibrium position. When counting, consider wheels 1 and 2 as solid, uniform cylinders of radii R1 and R2, respectively. Let us consider two examples of solving this problem.
Feedback
0Period | |||
1 month | 3 months | 12 months | |
0 | 0 | 0 | |
0 | 0 | 0 |