What is rotational inertia?
How does rotational inertia relate to Newton's 2ⁿᵈ law?
A motor capable of producing a constant torque of and a maximum rotation speed of is connected to a flywheel with rotational inertia . What angular acceleration will the flywheel experience as the motor is switched on?
How long will the flywheel take to reach a steady speed if starting from rest?
How can we calculate rotational inertia in general?
Consider the object shown in figure 3(a). What is its rotational inertia?
Consider the alternate case of Figure 3(b) of the same system rotating about a different axis. What would you expect the rotational inertia to be in this case?
How can we find the rotational inertia of complex shapes?
If the shape shown in Figure 5 is made by welding three thick metal discs (each with mass ) to a metal ring with mass . If rotated about a central axis (out of the page), what is the rotational inertia of the object?