A ball having mass m is fastenedat the end of a flagpolethat is connected to the sideof

Chapter 11, Problem 21

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A ball having mass m is fastenedat the end of a flagpolethat is connected to the sideof a tall building at point P asshown in Figure P11.21. Thelength of the flagpole is ,, andit makes an angle u with the xaxis. The ball becomes looseand starts to fall with acceleration2g j^. (a) Determine theangular momentum of theball about point P as a function of time. (b) For whatphysical reason does the angular momentum change?(c) What is the rate of change of the angular momentumof the ball about point P ?

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