Physics 45 Week 9 WorksheetInitialFinal iCA-12 A nutty physics professor is sitting on a stoolthat spins. The professor (including his arms)and the stool have a moment of inertia aboutthe stool axis of 5.00kgm. The professoris sitting on the stool with his feet off of theground holding a 5kg mass in each handat arms length (1.00m) from the axis ofrotation as he spins 1 revolution every2 seconds as shown to the right labelled "Initial".The 5kg masses can be regarded as point masses.a) If there is no friction in the stool axleand there is no air resistance, what isthe net torque on the nutty professor?b) As long as he doesn't touch the floor, what can you say about the angular momentum of theprofessor-stool-5kg-masses system?c) What is the initial moment of inertia of the professor-stool-5kg-masses system?d) If the professor pulls the 5kg masses in to a new position 10.0cm from the axis of rotation withouttouching the floor (or anything else), what can you say about the system angular momentum?e) Find the final moment of inertia of the professor-stool-5kg-masses system.f) Find the final angular velocity of the professor-stool-5kg-masses system in rev/s.1,00m10.0cmRotation axis

spins. the stool have a moment of inertia about stool axis of 5.00kgm". The professor tting on the stool with his feet off of the und holding a 5kg mass in each hand rms length (1.00m) from the axis of tion as he spins 1 revolution every econds as shown to the right labelled "Initial". = 5kg masses can be regarded as point masses. f there is no friction in the stool axle nd there is no air resistance, what is ne net torque on the nutty professor?

spins. the stool have a moment of inertia about stool axis of 5.00kgm". The professor tting on the stool with his feet off of the und holding a 5kg mass in each hand rms length (1.00m) from the axis of tion as he spins 1 revolution every econds as shown to the right labelled "Initial". = 5kg masses can be regarded as point masses. f there is no friction in the stool axle nd there is no air resistance, what is ne net torque on the nutty professor?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter8: Rotational Equilibrium And Dynamics

Section: Chapter Questions

Problem 75AP: Additional Problems A typical propeller of a turbine used to generate electricity from the wind...

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> 2 A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 4.5 kg. m². A second student tosses a 2.0 kg mass with a speed of 3.0 m/s to the student on the stoole, who catches it at a distance of 0.40 m from the axis of rotation. Assume a right angle between the ball trajectory and radius drawn to the catch point.
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