Q1. An old riddle asks, "Which has more mass, a kilogram of feathers or a kilogram of iron? The answer is that they have the equal mass. Based on your knowledge of density, which would take up more space, kilogram of feathers or a kilogram of iron? Describe.
Q2. The hydraulic cylinder is subjected to 3 forces. An 8kN force is exerted on cylinder at B that is parallel to the cylinder and points from B towards C. The link AC exerts the force at C that is parallel to the line from A to C. The link CD exerts a force at C that is parallel to the line from C to D.