Class 11 Physics simulations · System of Particles and Rotational Motion

A rod as a physical pendulum

Swing a uniform rod about one end and connect rotational inertia with its oscillation period.

Open the simulation

What to notice

Gravity acts at the centre of mass. The period is independent of mass for the same rod length.

Key relation

T ≈ 2π√(I / mgd)

Try this

Double the rod’s mass, then double its length. Compare the changes.

What you can change

• Rod length: 0.5 to 2 m
• Rod mass: 1 to 5 kg
• Release angle: 5 to 20 °

More in System of Particles and Rotational Motion

• Conservation of angular momentum
• Centre of mass of three masses
• Moment of inertia of shapes
• Parallel-axis theorem
• Rolling without slipping
• Rolling race: ring, disc, spheres
• Torque and rotation
• Topple or slide?

See all Class 11 Physics simulations or every Physica simulation.