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Chapter 10: Problem 82
If the sample tubes are made longer, the rotational inertia of the centrifuges with sample tubes inserted will a. remain the same. b. increase. c. decrease.
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A solid cylinder and a hollow cylinder of the same mass and radius are rolling along level ground at the same speed. Which has more kinetic energy?
Determine the angular speed, in rad/s, of (a) Earth about its axis; (b) the minute hand of a clock; (c) the hour hand of a clock; and (d) an eggbeater turning at \(300 \mathrm{rpm}\).
The local historical society has asked your assistance in writing the interpretive material for a display featuring an old steam locomotive. You have information on the torque on a flywheel but need to know the force applied by means of an attached horizontal rod. The rod joins the wheel with a flexible connection \(86 \mathrm{~cm}\) from the wheel's axis. The maximum torque the rod produces on the flywheel is \(12.0 \mathrm{kN} \cdot \mathrm{m}\). What force does the rod apply?
A \(540-\mathrm{N}\) frictional force acts on the rim of a \(1.0-\mathrm{m}\)-diameter wheel to oppose its rotational motion. Find the torque about the wheel's central axis.
A solid \(2.6-\mathrm{kg}\) sphere is rolling at \(7.1 \mathrm{~m} / \mathrm{s}\). Find (a) its translational kinetic energy and (b) its rotational kinetic energy.
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