A baseball pitching machine works by rotating a light and stiff rigid rod about a horizontal axis until the ball is moving toward the target. Suppose a 144g baseball is held 87cm from the axis of rotation and released at the major league pitching speed of 81mph. What is the ball's centripetal acceleration just before it is released? m/s^2. Express your answer using two significant figures. What is the magnitude of the net force that is acting on the ball just before it is released? N. Express your answer using two significant figures.
Added by Isabel L.
Step 1
Given: Mass of the ball, m = 0.144 kg Radius, r = 0.87 m Pitching speed, v = 38.9 m/s Using the formula for centripetal acceleration: \(a_c = \frac{v^2}{r}\) Plugging in the values: \(a_c = \frac{(38.9)^2}{0.87}\) Show more…
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