3. A bowling ball of mass m and radius r is launched with speed vo (having nospin) on a lane at an alley with a coefficient of friction of μ. How far willit travel before it starts to roll without slipping? What will its speed bewhen this happens? Hint: The frictional force exerts a force that causesthe speed to decrease linearly at a constant rate. The friction forcecauses a torque about the center of the bowling ball that in turn causesthe angular velocity to increase linearly at a constant rate. There will bea time at which the bowling ball stops slipping and starts rolling.

Note: The angular momentum will remain conserved. Since there is no external net torque acting on…

Answered: 3. A bowling ball of mass m and radius…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 69P: A gymnast does cartwheels along the floor and then launches herself into the air and executes...

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A wheel is rotating about a fixed axis with constant angular acceleration 3 rad/s2. At different moments, its angular speed is 2 rad/s, 0. and +2 rad/s. For a point on the rim of the wheel, consider at these moments the magnitude of the tangential component of acceleration and the magnitude of the radial component of acceleration. Rank the following five items from largest to smallest: (a) |at| when = 2 rad/s, (b)|ar| when = 2 rad/s, (c)|ar| when = 0, (d) |at| when = 2 rad/s, and (e) |ar| when = 2 rad/s. If two items are equal, show them as equal in your ranking. If a quantity is equal to zero, show that fact in your ranking.
A cylinder with rotational inertia I1=2.0kgm2 rotates clockwise about a vertical axis through its center with angular speed 1=5.0rad/s . A second cylinder with rotational inertia I2=1.0kgm2 rotates counterclockwise about the same axis with angular speed 2=8.0rad/s . If the cylinders couple so they have the same rotational axis what is the angular speed of the combination? What percentage of the original kinetic energy is lost to friction?

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