ROTATIONAL MOTION

What is the position of point A in the equilateral triangle OAB?

• (0, 0)
• (0.5, 0)
• (0.25, 0.25√3)
• (0.25, 0)

Which coordinate system is used in the examples for finding center of mass?

• Polar coordinate system
• Spherical coordinate system
• Cylindrical coordinate system
• Cartesian coordinate system

What is the side length of each square in the L-shaped lamina?

• 0.5 m
• 1 m
• 1.5 m
• 2 m

In the equilateral triangle setup, which point has the greatest influence on the center of mass?

• Point O with 100 g
• Point A with 150 g
• Point B with 200 g
• All have equal influence

What is the formula for the y-coordinate of the center of mass?

• Y = (y₁ + y₂ + ...)/n
• Y = m₁y₁ + m₂y₂ + ...
• Y = (m₁y₁ + m₂y₂ + ...)/(m₁ + m₂ + ...)
• Y = (y₁ + y₂)/2