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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A 140 kg hoop rolls along a horizontal floor so that the
hoop’s center of mass has a speed of 0.150 m/s. How much work
must be done on the hoop to stop it?
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- 55arrow_forwardA large plate is initially rotating about an axis through its center with angular velocity of 3w, as shown in the figure. The upper plate is initially not rotating and has the same mass but half the radius as the large plate. The small plate is lowered onto the large plate, and after a short time they will rotate together and willI have the same final angular velocity. Which of the following best describes the ratio of the kinetic energy of the system before the collision to after the collision (Ratio KEbefore KEafter %D 3w. 1.50 1.25 1.00 0.80 0.67arrow_forwardKathrine lets go of a cube of mass of m = 5 kilograms on her physics demo device she created. Her cube goes down a super smooth slide surface that has a height vertical distance of h=85 cm. At the end of the slide, her cube crashes into and sticks to the lower end of a vertical pole that has a mass M=10.5 kg and length 1-2.00m. Right after the crash, the pole pivots about a hinge point near its upper end through an angle (theta) before it stops for a moment. See the image given below to visualize Katherines system. You are tasked with Figuring out the following three things The speed of her cube just before it hits the pole The angular speed of the pole just after the crash The angle (theta) through which the pole pivots a. b. C. 0 Kathrine and her devicearrow_forward
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