Class 11 Physics simulations · System of Particles and Rotational Motion

Centre of mass of three masses

Change three masses on a light triangular plate. The plate balances only on its centre of mass.

Open the simulation

What to notice

The centre of mass moves toward the heavier masses and always stays inside the triangle.

Key relation

r_cm = Σ mᵢ rᵢ / Σ mᵢ

Try this

Make one mass much heavier than the others.

What you can change

• Mass A: 0.5 to 10 kg
• Mass B: 0.5 to 10 kg
• Mass C: 0.5 to 10 kg

More in System of Particles and Rotational Motion

• Conservation of angular momentum
• Moment of inertia of shapes
• Parallel-axis theorem
• A rod as a physical pendulum
• Rolling without slipping
• Rolling race: ring, disc, spheres
• Torque and rotation
• Topple or slide?

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