Time?? It's quite different !!

Classical Mechanics Level 5

A uniform circular disc of radius $\displaystyle{\mathcal{R}}$ is placed on a frictionless horizontal plane.Another identical disc rotating with angular velocity $\displaystyle{\omega}$ is gently placed on the top of it.The time taken to acquire the final angular velocity can be expressed as $\dfrac{a}{b} \times \dfrac{\mathcal{R} \omega}{\mu g}$ Where $\displaystyle{\mu}$ is the coefficient of friction between the plates. What is the value of $\displaystyle{a+b}$ ?

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Time?? It's quite different !!

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 7 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.