Moment of inertia, torque, angular momentum, rolling motion.
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Q1 · Rotational Motion and Moment of Inertia · MEDIUM
A wheel of moment of inertia 2 kg·m² is rotating at 300 rpm. The torque required to stop it in 10 seconds is:
Q2 · Rotational Motion and Moment of Inertia · HARD
A uniform rod of length L and mass M is pivoted at one end. The moment of inertia about the pivot is:
Q3 · Rotational Motion and Moment of Inertia · EASY
The moment of inertia of a uniform circular disc of mass M and radius R about an axis passing through its center and perpendicular to its plane is:
Q4 · Rotational Motion and Moment of Inertia · MEDIUM
A solid sphere and a hollow sphere of equal mass and radius roll down an inclined plane. Which one reaches the bottom first?