| 摘要 |
A game apparatus particularly adaptable for use in practicing and learning the fundamentals of the game of tennis includes a ball, e.g., a tennis ball, suspended from a cord. The cord is connected at one end of a rigid rod having springs selectively coupled to the other end, and a stabilizing member is coupled to and spaced from the ends of the rod. The rod and stabilizing member are rotatably coupled to a supporting structure. In use, when the suspended ball is truck with a blow, e.g., with a tennis racket, the ball will swing outward in an arc, against the force of a spring and the gravitational force acting on the stabilizer, and then will rapidly and smoothly return to the stroking position as a result of the combined forces of gravity and a spring.
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