Question

The air around the spinning baseball in the following figure (top view) experiences a faster speed on the left than the right side and hence a smaller pressure on the left than the right. Suppose the ball is traveling forward in the x direction at 33.0 m/s and it breaks 12.0 cm to the left in the -y direction (neglect the pull of gravity in the z direction). Assume the ball has a mass of 142 g and a radius of 3.55 cm. In addition, assume it travels at a constant speed of 33 m/s in the x direction from the pitcher's mound to home plate (60.5 ft = 18.44 m). Hint: The pressure difference equals the leftward force divided by the cross-sectional area of the ball, ?r2.

1) Determine the pressure difference between the right and left sides of the ball. (Express your answer to three significant figures.)

Answer 1

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