🔑The angular acceleration of a spinning disc is determined by the net torque acting on it. The net torque is the difference between the frictional torque and the applied torque.
🔑The graphs of angular velocity and acceleration for a spinning disc experiencing friction and torque can provide valuable information about the motion of the disc.
🔑Adding oil to the contact surface between the disc and the axle reduces friction and slows down the rate at which the disc's angular velocity decreases.
🔑The rotational inertia of a disc can be calculated using the equation: I = (τ₀ * t₁) / ω₀, where τ₀ is the frictional torque, t₁ is the time taken for the disc to come to rest, and ω₀ is the initial angular velocity.
🔑The change in the angular velocity of a spinning disc when the torque acting on it is constant can be represented by a straight line on the graph.