ROTATIONAL MOTION

What is the main assumption made when deriving K = ½ Iω²?

• Mass is zero
• Velocity is constant
• All particles have the same angular velocity
• Gravity is absent

What is the dimension of moment of inertia?

• [M][L]
• [M][L²]
• [M][L⁻²]
• [M²][L]

What is the formula for the moment of inertia of a system of particles?

• I = Σ mi ri
• I = Σ mi / ri²
• I = Σ mi ri²
• I = Σ mi² ri

What is the torque produced by F1 about point A?

• Clockwise
• No torque
• Counterclockwise
• Random direction

What is the torque produced by the weight W about point A?

• Counterclockwise
• No torque
• Clockwise
• Depends on angle