Please enable JavaScript.
Coggle requires JavaScript to display documents.
TOPIC 8: Rotation of Rigid Bodies, CHAI YING YING A20SC0035 - Coggle…
TOPIC 8: Rotation of Rigid Bodies
Angular Quantities
-angle, θ=s/r
-angular displacement, Δθ = θ - θ
-angular velocity, ω=θ/t
-linear velocity, v=rω
-angular acceleration, α=ω/t
-tangential acceleration, a = rα
-centripetal acceleration, a = ω²r
-period, T=1/f
Constant Angular Acceleration
Torque
Torque is the force need to make an object start moving
τ = Iα
I is moment of inertia,I=mr²
use right hand rule to determine the direction
Rotational Dynamics; Torque and Rotational Inertia
Rotational Inertia
Rotational dynamics
Rotational Inertia
-depends on mass distribution and location of axis of rotation
Moment of Inertia
I=mr^2
-parallel axis theorem
-perpendicular axis theorem
Moment of inertia about any axis parallel to an axis that goes through the center of mass of an object
Rotational Kinetic Energy
W= τθ
Power = τω
Kinetic energy of object that both translational and rotational motion
CHAI YING YING
A20SC0035
