ROTATIONAL MOTION

How does angular velocity differ from linear velocity in terms of body representation?

• Both are same for all
• Both vary
• Same for all particles vs different for each
• Different vs same

If two particles are at the same distance from the axis, what can be said about their linear speeds?

• Different due to mass
• Always different
• They are equal if ω is same
• Depends on material

What is the direction of v = ω × r according to the right-hand rule?

• Curl from r to ω
• Use left hand
• Curl fingers from ω to r, thumb gives v
• No rule needed

How is the instantaneous angular velocity obtained mathematically?

• Integral of ∆θ dt
• Sum of all ∆θ
• Limit of ∆θ/∆t as ∆t → 0
• Product ωr

What is the primary reason particles on the axis are stationary?

• They have infinite inertia
• Forces balance
• Their distance from the axis is zero
• They are glued in place