College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- The rotating blade of a blender turns with a constant angular acceleration 1.50(rad/s²]. A. How much time does it take to reach an angular velocity of 36. 0 [rad/s] starting from rest? Through how manry revolutions does the blade turn in this time interval? C. What are the tangertial acceleration and tangential speed of an ant sitting on the blade 10.0 [cm) from the axis of rotation during the end of this irterval? D. What is the moment of inertia ofthe ant if its mass is 10.0 (g? E. What is the rotational kinetic energy of the ant? B.arrow_forwardT m A 25.0 kg mass is hung from a rope that is passed over a pulley and held by a man standing on a ramp. The pulley can be treated as a solid disk with a mass of 10.0 kg that has a radius of 0.400 m. The man pulls the rope so that the pulley rotates from rest through an angular displacement of 15.0 rad in 2.00s. A. What is the angular acceleration of the disk? B. What is the tension of the rope as it pulls up on the box? C. What is the force applied by the man on the rope as he pulls the box upward?arrow_forwardPlz use g = 9.8 m/s2 to find if neededarrow_forward
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- W L A rod of length L = 35.0 cm rotates about its end through O with a constant angular acceleration a = 2.23 rad/s², as shown in the figure. At t= 0, the initial tangential speed of a point P on the rod is to 14.4 m/s. Find the final tangential speed v of the point P at t = 5 s. O 21.96 O 18.30 O 27.45 O 15.25 12.20arrow_forwardPlz help.arrow_forwardA wheel is rotating counter clockwise initially at an angular speed of 2.50 rad/s. Itdeceleratesover a 4.0-s interval at a rate of 0.140 rad/s2. a)What is its angular speed after this 7.0-s interval? b)What is the angular displacement? c) How long would it take for it to stop?arrow_forward
- 2. A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.35 × 104 rad/s to an angular speed of 3.65 × 10¹ rad/s. In the process, the bit turns through 1.92 × 10¹ rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 7.70 × rad/s, starting from rest? S ssfot €60 s OSISS ƒ60 3arrow_forwardA merry-go-round turns at a constant rate of 6 complete rotations per minute. What is its angular speed in radians per second? A. 6л rad/s B. π/10 rad/s С. π/5 rad/s D. 6.0 rad/s O A OBarrow_forwardAn 8.00-cm-diameter, 370 gg solid sphere is released from rest at the top of a 1.50-m-long, 20.0 ∘∘ incline. It rolls, without slipping, to the bottom. What is the sphere's angular velocity at the bottom of the incline? Express your answer with the appropriate units.arrow_forward
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