A thin uniform rod has a length of 0.480 m and isrotating in a circle on a frictionless table. The axisof rotation is perpendicular to the length of the rodat one end and is stationary. The rod has anangular velocity of 0.42 rad/s and a moment ofinertia about the axis of 3.30x10-3 kg m2. A buginitially standing on the rod at the axis of rotationdecides to crawl out to the other end of the rod.mrod 4.30x10-2 kgPrevious AnswersSubmitCorrectWhen the bug has reached the end of the rod andsits there, its tangential speed is 0.110 m/s. Thebug can be treated as a point mass.Part BWhat is the mass of the bug?Express your answer with the appropriate units.HA?kg- 0.0097mbugPrevious Answers Request AnswerSubmitX Incorrect; Try Again; 5 attempts remainingDrovido Foodbol

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Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter9: Momentum And Its Conservation

Section: Chapter Questions

Problem 1STP

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A massless tether with a masses tied to both ends rotates about a fixed axis through the center. Can the total acceleration of the tether mass combination be zero If the angular velocity Is constant?
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An ice skater is preparing for a jump with turns and has his arms extended. His moment of inertia is 1.8kgm2 while his arms are extended, and he is spinning at 0.5 rev/s. If he launches himself into the air at 9.0 m/s at an angle of 45 with respect to the ice, how many revolutions can he execute while airborne if his moment of inertia in the air is 0.5kgm2 ?
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A diver off the high board imparts an initial rotation with his body fully extended before going into a tuck and executing three back somersaults before hitting the water. If his moment of inertia before the tuck is 16.9kgm2 and after the tuck during the somersaults is 4.2kgm2 , what rotation rate must he impart to his body directly off the board and before the tuck if he takes 1.4 s to execute the somersaults before hitting the water?
A thin rod of length 2.65 m and mass 13.7 kg is rotated at anangular speed of 3.89 rad/s around an axis perpendicular to therod and through one of its ends. Find the magnitude of the rodsangular momentum.
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The position vector of a particle of mass 2.00 kg as a function of time is given by r=(6.00i+5.00tj), where r is in meters and t is in seconds. Determine the angular momentum of the particle about the origin as a function of time.
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