1. Four-bar Mechanism (leading form):

Given: r₁ =2.5in., r₂ = 1.0in., r₃ = 3.1in., r₄ = 2.0in., a₃ = 1in., b₃= 1.0in.

Find: Use the spreadsheet (4bar template.xls) posted on Canvas to find q₃, q₄, x_p, and y_p for each value of q₂ from 0°-360° (in increments of 10°). Plot a scatter plot of q₂ vs. q₃ and q₄ (on one plot) and x_p vs. y_p on a separate plot. Submit a printout of your spreadsheet and the two plots.

Check: q₃(q₂ = 30°) = 19.36°

2. Four-bar Mechanism (lagging form):

Given: r₁ =2.5in., r₂ = 1.0in., r₃ = 3.1in., r₄ = 2.0in., a₃ = 1in., b₃= 1.0in.

Find: Modify the equations for problem 1 for the crossed form. Find q₃, q₄, x_p, and y_p for each value of q₂ from 0°-360° (in increments of 10°). Plot a scatter plot of q₂ vs. q₃ and q₄ (on one plot) and x_p vs. y_p on a separate plot. Submit a printout of your spreadsheet and the two plots.

Check: q₃(q₂ = 30°) = -53.39°

3. Crank-Slider Mechanism:

Given: r₂ = 1.0in., r₃ = 3.1 in, r₁ = 2.0in, a₃ = 1in, b₃ = 1.0in.

Find: Modify the 4bar spreadsheet posted on Canvas to implement the equations for a crank-slider. Use the modified spreadsheet to find q₃, r₄, x_p and y_p for each value of q₂ from 0°-360° (in increments of 10°). Plot a scatter plots of q₂ vs. q₃, q₂ vs. r₄, and x_p vs. y_p on a separate plots. Submit a printout of your spreadsheet and the three plots.

Check: q₃(q₂ = 30°) = 28.94°