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In
racquet sport Racket sports are games in which players use rackets to hit a ball or other object. However, this list is broader and includes sport disciplines where players use not rackets but paddles (hand-held frame with flat boards or planks instead of strings ...
s and
golf Golf is a club-and-ball sport in which players use various clubs to hit balls into a series of holes on a course in as few strokes as possible. Golf, unlike most ball games, cannot and does not utilize a standardized playing area, and coping w ...
, backspin (also known in racket sports as slice or underspin), is a shot such that the ball rotates backwards (as though rolling back towards the player) after it is hit. This direction of spin imparts an upward force that lifts the ball (see
Magnus effect Magnus effect in a 2D liquid of hard disks The Magnus effect is an observable phenomenon that is commonly associated with a spinning object moving through air or another fluid. The path of the spinning object is deflected in a manner that is not ...

Magnus effect
). While a normal hit bounces well forward as well as up, backspin shots bounce higher and less forward. Backspin is the opposite of
topspin In ball sports, topspin is a property of a ball that rotates forwards as it is moving. Topspin on a ball propelled through the air imparts a downward force that causes the ball to drop, due to its interaction with the air (see Magnus effect). To ...

topspin
. 4 phases in a backspin curve in Table Tennis In racket sports, the higher bounce imparted by backspin may make a receiver who has prepared for a different shot miss or mis-hit the ball when swinging. A backspin shot is also useful for defensive shots because a backspin shot takes longer to travel to the opponent, giving the defender more time to get back into position. Also, because backspin shots tend to bounce less far forward once they reach the opposite court, they may be more difficult to attack. This is especially important in table tennis because one must wait for the ball to bounce before hitting it, whereas in tennis the opponent may Volley (tennis), volley the ball. In golf, a well-struck shot will result in a large amount of backspin that will carry the ball higher into the air and farther. Backspin also helps with distance control and, if there is enough backspin, the ball will "check" if it lands on the putting surface, and sometimes even creep backwards (in the opposite direction that the ball was flying) upon landing.


See also

*Groundstroke *Bernoulli's principle


Sources

The Physics of Sports by Angelo Armenti
/ref> {{Tennis box Tennis shots, Backspin sv:Lista över golftermer#Backspin