Questions 23 and 24 are based on the following physical situation Ends of three light identical rods each of length / are connected to a light pivot that enables them to rotate in any direction. At the other ends of the rods, three particles A, B and C of masses m, 2m and 3m respectively are affixed. Initially, the rods are coplanar, angle between any two adjacent rod is 120° and the particles are at rest. Now the particle C is given a velocity u perpendicular to the rod connected to it and in the plane of the rods as shown in the figure. Ignore gravitational interaction between the particles. 23. Denoting acceleration vectors of the particles A, B and C by a, a and ac respectively, which of the following conclusion can you make? (a) ā +ā +āc = Ō (c) a + 2a +3āc = 0 24. What are moduli of acceleration vectors of the particles A, B and C immediately after the particle C is given velocity u? (a) All equal to 6u² 3u² 11/ 11/ (c) and (b) 3ā + 2 + c = 0 (d) None of these 2u² 111 (b) (d) 3u² 1 12u² 131 13 3u² 21 6u² and u² 1 and 4u² 131 1 BQ 120° 1 120° 120°

Q: Draw the orthographic views of the following isometric figure.

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Engineering Drawing

Technical drawing has been around since ancient times. As in the ancient Renaissance, complicated drawings were created, including Leonardo da Vinci's drawing. Modern engineering drawing, including its specific orthographic projection with scale conventions, began in Europe (France) during the early stages of Industrialization. L.T. C. Rolt also made some of Marc's drawings for its block-making machinery (in 1799) that also may have contributed significantly to British engineering technology. Since he learned the art of presenting three-dimensional(3D) items in a two-dimensional(2D) plane, as we now term mechanical drawing.