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# Suppose that the object in Question 11.9 is released from ## Problem 10DQ Chapter 11

University Physics | 13th Edition

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Problem 10DQ

Suppose that the object in Question 11.9 is released from rest with the bar tilted at 60° above the horizontal with the ball at the upper end. As it is falling, will it (a) rotate about its center of gravity until it is horizontal; (b) rotate about its center of gravity until it is vertical with the ball at the bottom; (c) rotate about the ball until it is vertical with the ball at the bottom; or (d) remain at 60° above the horizontal? Q11.9 An object consists of a ball of weight W glued to the end of a uniform bar also of weight W. If you release it from rest, with the bar horizontal, what will its behavior be as it falls if air resistance is negligible? Will it (a) remain horizontal; (b) rotate about its center of gravity; (c) rotate about the ball; or (d) rotate so that the ball swings downward? Explain your reasoning.

Step-by-Step Solution:

Solution 10DQ Introduction We have to discuss whether the system with bar and ball will rotate during free fall or not. Step 1 The following figure shows the schematic of the given problem. So from the figure we can see that there is a couple about the center of gravity of the combined system because of the weight of the ball and the bar. Hence there will be rotation of the...

Step 2 of 3

Step 3 of 3

##### ISBN: 9780321675460

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