A bucket of water with total mass 20.0 kg is attached to a rope, which in turn is wound around a 4.00-cm radius cylinder at the top of a well. The bucket is raised to the top of the well and released. The bucket is moving with a speed of 8.00 m/s upon hitting the water surface in the well. What is the angular speed of the cylinder at this instant?
a. 64.0 rad/s b. 50.3 rad/s
c. 200 rad/s d. 126 rad/s
e. 393 rad/s
c
Physics & Space Science
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A wheel (radius = 0.20 m) is mounted on a frictionless, horizontal axis. A light cord wrapped around the wheel supports a 0.50-kg object, as shown in the figure. When released from rest the object falls with a downward acceleration of 5.0 m/s2. What is the rotational inertia of the wheel?
?
?
A. 0.023 kg?m2 B. 0.027 kg?m2 C. 0.016 kg?m2 D. 0.019 kg?m2 E. 0.032 kg?m2
Physics & Space Science
The type of EM waves used in radar is
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Physics & Space Science
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Physics & Space Science
What is the primary effect the carbon dioxide in Venus' atmosphere has on the planet
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