Angular Momentum

What is the primary characteristic that differentiates angular momentum from linear momentum?

• Angular momentum applies only to objects with zero net force.

• Angular momentum describes objects moving in a straight line, while linear momentum describes rotation.

• Angular momentum is associated with rotating or spinning objects, whereas linear momentum is for objects moving in a straight line.

• Angular momentum is a scalar quantity, while linear momentum is a vector.

An object is rotating counter-clockwise around a central axis when viewed from above. According to the right-hand rule, what is the direction of its angular momentum vector?

• Upwards

• Downwards

• To the left

• To the right

Which equation correctly represents the relationship between the change in angular momentum (ΔL), net torque (τ), and the time interval (Δt) over which the torque is applied?

• ΔL = τ / Δt

• ΔL = τΔt

• ΔL = τ + Δt

• ΔL = τ - Δt

A 1.1 kg object is moving in a circular path with a radius of 0.28 m at a tangential velocity of 3.2 m/s. What is its angular momentum?

• 0.99 kg·m/s

• 0.99 kg·m²/s

• 0.31 kg·m²/s

• 0.31 kg·m/s