Prin Periodic Table Question 1 of 12 ncorrect incorrect sapling leaming Mapm It

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Prin Periodic Table Question 1 of 12 ncorrect incorrect sapling leaming Mapm It is generally a good idea to gain an understanding of the "size" of units. Either using an Internet search, or referring to the hint panel below, find the official size and masses of the sports balls listed below and calculate their moments of inertia about their center of mass. Rounding your results to the nearest power of 10 categorize each of the sports balls according to the order of magnitude of the moment of inertia. (Note that some of the balls are hollow.) sonng r the bas are holiows boals acmen 10-5 kg. m 2 tennis ball golf ball 1o-4 kg.m? 10-3 kg. m2 10-2 kg. 101 kg 1kg volleyball bowling ball soccer ball As a physics demonstration, you want a special bowling ball made to demonstrate exactly 1 kg m2, so that our students can rotate the ball about its center of mass to get a feel" for how "big 1 kg m2 is. The bowling alls most familiar to your students has a weight of 15.2 pounds and have a circumference of 25.5 inches, but ave a moment-of-inertia equal to 1 kg m2. Since the sporting goods manufacturer has no understanding of how "big" 1 kg m2 is, calculate the diameter of the demo bowling ball (in inches) it will need do not have a moment-of-inertia equal to 1 kg m2. Since the sporting g to manufacture. Assume that bowling balls are solid, with a constant density Number 16.48 in Previous check Answer Next Exit

Explanation / Answer

For Balling ball manufacturing

I = 1/2*m*r^2

1 = 1/2*15.2*0.454*r^2

r =0.538 m = 53.8 cm

=53.8*0.393 = 21.14 inch. (size of balling ball.)

Here mass is taken as m =15.2 pounds.

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