13. Rotational Inertia & Energy
Conservation of Energy with Rotation
1PRACTICE PROBLEM
A paper cutter is made of a uniform bar attached by its lower end to a horizontal base by a frictionless axle. The bar of mass mb and length lb is initially at rest and perpendicular to the base. When the bar is barely moved from its initial position it rotates around the axle. Determine the expression of the angular velocity at the instant the bar strikes the base.
A paper cutter is made of a uniform bar attached by its lower end to a horizontal base by a frictionless axle. The bar of mass mb and length lb is initially at rest and perpendicular to the base. When the bar is barely moved from its initial position it rotates around the axle. Determine the expression of the angular velocity at the instant the bar strikes the base.