ROTATIONAL MOTION

What is the center of mass of a system consisting of two identical particles separated by distance d?

• At one of the particles
• At a distance d/4 from one
• At infinity
• At the midpoint between them

How does the center of mass change if mass is added to one side of a symmetric body?

• It remains unchanged
• It moves away from the added mass
• It disappears
• It shifts toward the side where mass is added

What is the center of mass of a uniform triangular lamina?

• At the orthocenter
• At the circumcenter
• At a vertex
• At the centroid of the triangle

If a body has a point of reflection symmetry, where is its center of mass located?

• At the surface
• At infinity
• At one end
• At the point of symmetry

What is the significance of the equation R = (1/M) ∫ r dm?

• It defines the moment of inertia
• It defines angular momentum
• It defines torque
• It defines the position of the center of mass