This is a pendulum problem.
where I is the moment of inertia of the bar, m is its mass, g is gravitational acceleration, and R is the distance between the pivot and the center of mass.
Moment of inertial of a rod about the end:
where m is the mass and L is the length.
A uniform steel bar swings from a pivot at one end with a period of 2.1s? How long is the bar?
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Simple Pendulum concept. You can view video lessons to learn Simple Pendulum. Or if you need more Simple Pendulum practice, you can also practice Simple Pendulum practice problems.