21. A ball having mass m is fas- tened at the end of a flagpole т that is connected to the side of a tall building at point P as shown in Figure P11.21. The length of the flagpole is l, and it makes an angle 0 with the x axis. The ball becomes loose [P and starts to fall with accelera- tion -gj. (a) Determine the angular momentum of the ball about point P as a function of time. (b) For what physical reason does the angular momentum change? (c) What is the rate of change of the angular momen- tum of the ball about point P? Figure P11.21

21. A ball having mass m is fas- tened at the end of a flagpole т that is connected to the side of a tall building at point P as shown in Figure P11.21. The length of the flagpole is l, and it makes an angle 0 with the x axis. The ball becomes loose [P and starts to fall with accelera- tion -gj. (a) Determine the angular momentum of the ball about point P as a function of time. (b) For what physical reason does the angular momentum change? (c) What is the rate of change of the angular momen- tum of the ball about point P? Figure P11.21

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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