ROTATIONAL MOTION

How is the total kinetic energy of a rotating body obtained?

• By averaging
• By integration only
• By summing kinetic energies of all particles
• By multiplying mass and ω

What is the kinetic energy of a particle of mass mi rotating at distance ri with angular speed ω?

• ½ mi ri ω
• ½ mi ri² ω
• ½ mi (riω)²
• ½ mi ri ω²

For a particle in circular motion, what is the relation between linear velocity v and angular velocity ω?

• v = r/ω
• v = ω/r
• v = rω
• v = r²ω

Which parameter in rotational motion is independent of angular velocity?

• Kinetic energy
• Angular momentum
• Torque
• Moment of inertia

How is the moment of inertia I defined for a system of particles?

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