 |
50% off (Sale price $75.00, Reg. Price $150.00) :: Choose Between Two Options $75 for 10 weeks of tennis lessons for one youth, ages 3–12 (a $150 value) $140 for 10 weeks of tennis lessons for two youths, ages 3–12 (a $300 value)Lessons are held on Wednesdays from 5 p.m. until 6:20 p.m. All participants receive a t-shirt, activity book, and a one-year membership to the USTA.Tennis Strings: Choosing the Right TensionFinding the right tennis racket is critical, but stringing it at a suitable tension can be equally important. Figure out your sweet spot with Groupon’s study of racket strings.When it comes to their rackets, professional tennis players seem to be downright neurotic. Some may stash as many as 10 versions of the same racket in their bag to use over the course of just one match. But whereas hockey players are simply being superstitious when they burn their sticks between each period, tennis players have a reason to be profligate: as the match progresses, a racket’s strings lose their tension, so players must switch in order to keep the tension with which they’re comfortable. Indeed, string tension is as important as any other element on the court, a direct reflection of a player’s style—a tightly strung racket provides more control and more spin, for instance, while looser strings produce extra power.The physics behind string tension is a matter of basic kinetics. When a ball collides with the bed of strings, both surfaces compress to absorb the impact. The tennis ball flattens, and the strings depress like a trampoline. As both sides bounce back to normal, the ball launches in the opposite direction of the impact. By design, the strings handle most of the force of this rebound, returning around 90 percent of the energy they take in. Since looser strings depress more, they take in (and thus release) more energy, resulting in a more powerful ricochet. With tighter strings, however, the ball flattens more during impact, which allows the strings to get a better grip on the sphere—a boon to players who prefer to add spin to their shots.Along with the benef
|
In addition to coupons, we offer tens of thousands of deals in the following spaces:
Drop us a line to recommend improvements. Thanks.
Note: We may earn a commission when you utilize one of our coupons to make a purchase.
