Unit 5 · Torque and Rotational Dynamics
Chapter 5.2
Torque and Rotational Inertia
Heave on a wrench right at the bolt head and nothing turns; slide your hand to the end and the bolt gives. And a broom spun end over end resists far more than the same broom spun about its handle.
free · lesson 16 of 18
By the end
- 01Compute torque from a force, its lever arm, and the angle between force and position, and diagram where each force acts
- 02Compute rotational inertia for a few point masses and explain why mass far from the axis dominates
- 03Apply the parallel-axis theorem and explain why rotational inertia is least about an axis through the center of mass