A softball pitcher accelerates a softball from Vi = -0.5 m/s to Vf =12.7 m/s (at the instant of release) in 0.38 seconds. If we assume that angular acceleration is constant throughout this motion, and the length of the pitcher’s arm is 0.52 meters. Draw a free body diagram of the ball at the instant of release. If the mass of the ball is 180g, calculate the forces (Fx and Fy) exerted by the pitcher’s hand on the ball. (Ignore wind resistance, assume that at the point of release, centripetal acceleration is exactly vertical and tangential acceleration is exactly horizontal
Angular speed, acceleration and displacement
Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.
Angular Position
Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.
A softball pitcher accelerates a softball from Vi = -0.5 m/s to Vf =12.7 m/s (at the instant of release) in 0.38 seconds. If we assume that
Draw a free body diagram of the ball at the instant of release. If the mass of the ball is 180g, calculate the forces (Fx and Fy) exerted by the pitcher’s hand on the ball. (Ignore wind resistance, assume that at the point of release, centripetal acceleration is exactly vertical and tangential acceleration is exactly horizontal
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