The lift coefficient on a rotating sphere is very approximately given by 

over the range of 

Here R is the sphere radius and W is rotation rate of the sphere. For the baseball in Problem 12.17, determine the rotation rate for a baseball thrown at 110 mph to have the lift equal the weight. How many rotations would such a ball make in 60 ft 6 in.?

Data From Problem 12.17

A baseball has a circumference of 9¼ in. and a weight of 5¼ ounces. At 95 mph determine

Transcribed Image Text:

(RO |CL = 0.24 - 0.05 (RO 1.5 > >0.2 0.2