Explain why a building made of bricks has smaller entropy than the same bricks in a disorganized pile. Do this by considering the number of ways that each could be formed (the number of microstates in each macrostate).

Chapter 7: Rotational Motion 7.1 Describing Circular and Rotational Motion y s θ (adians ) r Particle = angular displacement (replaces 'x' for rotational motion) radius Arc length Angular r s θ = 2π r = 2π radians = 360 =1 rev position full circlr θ 0 € or 1 radian ≈ 60 x angular displacement Δθ angular velocity =ω = time interval = Δt (replaces 'v') € Note that no matter where the particle is along the radiuθ,is the same, and thus so iω ! € Δθ Δ( )r Δs Δt v ω = = = = ⇒ v = rω Δt Δt r r 7.2 The Rotation of a Rigid Body Rotation will always be circular motion, hence we can bring all our knowledge of ‘uniform’ circular motion to thi€ chapter … Since v = ω r, two points of a rotating object will have different speeds if they have different distances from the axis of rotation, but all points have the same angularωv.locity If the angular velocity is changing (NOT uniform motion anymore), then there is an angular acceleration (similar to li