The lengths of the links of link-gear mechanism ABC comply with the conditions: A͞C=1.4A͞B, B͞E=0.2A͞B and C͞F=0.65A͞B. When crank 1 turns about fixed axis A, point E of link 2 describes a path of which a certain portion approximates straight line q-q which is perpendicular to the line of centres AC.
$1358$LG,GI$