Fig. 2 shows a link mechanism. Crank OA rotates about O and link A.B slides along O O1. Plot the locus of points C for one revolution. AO = 50, AB = 140, AC = 70

Here's a step-by-step solution for question 5, explaining the graphical methods. Since I cannot draw diagrams, I will describe the construction and provide the numerical results that would be obtained from accurate drawings.

The beam has a span of $70\text{m}$. The forces and their distances from the left support $R_1$ are:

• $F_1 = 1\text{KN}$ at $10\text{m}$
• $F_2 = 2\text{KN}$ at $30\text{m}$
• $F_3 = 3\text{KN}$ at $40\text{m}$ (since it's $30\text{m}$ from $