ROTATIONAL MOTION

For a uniform circular disc, the center of mass is located at:

• The edge of the disc
• A random point inside
• The topmost point
• The center of the disc

What is the center of mass of a uniform rectangular plate?

• At one corner
• At the midpoint of a side
• At the center of mass of the longer side
• At the intersection of the diagonals

How does the center of mass of a solid hemisphere compare to that of a hollow hemisphere?

• Both are at the same point
• The hollow one is closer to the base
• The solid one is farther from the base
• The solid hemisphere's center of mass is closer to the flat base

What is the center of mass of a uniform semicircular wire?

• At the center of the circle
• At the midpoint of the diameter
• At a distance R from the center
• On the axis of symmetry at a distance of 2R/π from the center

For a right-angled triangle made of uniform wire, where is the center of mass located?

• At the right angle vertex
• At the center of the hypotenuse
• Inside the triangle
• Outside the triangle