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Ball spinning: (a) spinning and force of a table tennis ball at the initial moment; (b) force during the table tennis ball flight, where G denotes the gravity of a table tennis ball, F is the support force of the racket to the ball, f is the friction force between the racket and ball, and F L represents the Magnus force.

Ball spinning: (a) spinning and force of a table tennis ball at the initial moment; (b) force during the table tennis ball flight, where G denotes the gravity of a table tennis ball, F is the support force of the racket to the ball, f is the friction force between the racket and ball, and F L represents the Magnus force.

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When a table tennis ball is hit by a racket, the ball spins and undergoes a complex trajectory in the air. In this article, a model of a spinning ball is proposed for simulating and predicting the ball flight trajectory including the topspin, backspin, rightward spin, leftward spin, and combined spin. The actual trajectory and rotational motion of...

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Context 1
... direction of the Magnus force is perpendicu- lar to the rotation axis and movement direction of a ball, so it basically changes the flight velocity direction. According to the spinning direction, ball spinning is categorized into top, back, rightward, leftward, and combined spinning as shown in Figure 2. Figure 2(a) shows the momentary force of a table tennis ball on contact with a racket and its spinning after it hits the racket. ...
Context 2
... direction of the Magnus force is perpendicu- lar to the rotation axis and movement direction of a ball, so it basically changes the flight velocity direction. According to the spinning direction, ball spinning is categorized into top, back, rightward, leftward, and combined spinning as shown in Figure 2. Figure 2(a) shows the momentary force of a table tennis ball on contact with a racket and its spinning after it hits the racket. However, Figure 2(b) shows the Magnus force and gravity of a table tennis ball during the ball flight process (both buoyancy and air resistance of a table tennis ball are ignored). ...
Context 3
... to the spinning direction, ball spinning is categorized into top, back, rightward, leftward, and combined spinning as shown in Figure 2. Figure 2(a) shows the momentary force of a table tennis ball on contact with a racket and its spinning after it hits the racket. However, Figure 2(b) shows the Magnus force and gravity of a table tennis ball during the ball flight process (both buoyancy and air resistance of a table tennis ball are ignored). ...

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