Skates in Action
The previous web pages mentioned the physics
advantages and drawbacks of different types of skates
that have been used through history; now let's look at
some more specific examples of how physics plays a
roll in the basic use of the skates.
The very basics of the physics involved in ice skating
involves what has already been mentioned in earlier
sections, the problem of initiating or changing
direction of motion with little to no friction.
Normani explains it well. The lack of friction on ice
is largely due to a thin layer of meltwater on top of
ice. The sharp blades of ice skates allow the skater
to apply force to the ice and move themselves forward.
Skaters push backward with one skate while either
raising the other skate or allowing it to glide along
the ice. As they push backward, the skate slides
forward parallel to the blade and the resulting force
is perpendicular to the blade. Skaters will, often
subconsciously, change the angle of the skate they are
pushing off the ice with to make subtle changes in
speed.
https://www.real-world-physics-problems.com/physics-of-hockey.html
There are several ways for skaters to turn, but
probably the most simple involves this same concept of
force perpendicular to the skate blade. If a skater
wants to turn to the left, he or she can simply extend
the amount of time they apply force to their right
skate. The skate will continue to glide along the ice
parallel to the blade because of Newton’s first law.
The force acting perpendicular to the blade will cause
the skater to turn to the left.
Skaters can also turn using this same concept by
tilting their bodies and applying force to the inside
of one blade and the outside of another. This allows
for tighter turns because more force can be applied.
For example, if a skater wants to turn to the right,
they can apply pressure to the inside edge of their
left blade then lean to the right and apply a force on
the ice with the outside edge of their right blade.
They can continue leaning to the right and alternating
blades until they have turned as far as they would
like to turn. This method allows for sharper turns
because the skater can apply more force when using
both legs and can tighten the angle of their turn with
each step.
https://www.hockeyshot.com/blogs/training-academy/hockey-skills-tight-turn-tips-for-hockey-players
There is a lot more physics that goes into skating.
Figure skaters and hockey players will have different
concerns when it comes to skating. Everyday people
will be less concerned with speed and precision and
more concerned with ease of execution. This has been a
very brief overview of some of the main points of the
physics involved in the basic design of ice skates and
the basics of ice skating.
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