ENERGY/WORK-POWER
Rugby players do a ton of work during games, and not just the physics kind. They
use energy to perform tasks, do work while doing the tasks and also use power to
move things. In this section im going to Zoom in on The Work done and power required to lift a player in a lineout, the conservation of energy in the process of a rugby ball being kicked through the posts, and also the amount of energy in food rugby players require pre-game and their diet.
use energy to perform tasks, do work while doing the tasks and also use power to
move things. In this section im going to Zoom in on The Work done and power required to lift a player in a lineout, the conservation of energy in the process of a rugby ball being kicked through the posts, and also the amount of energy in food rugby players require pre-game and their diet.
Work and Power
A lineout in rugby is preformed when the ball goes out of bounds. a player on each team is lifted by two of his teammates in the air, and tries to retrieve a ball that is thrown in to play. The weight of the average professional rugby player is about 96kg. This means that in order to lift a player in a lineout to the highest point possible, there must be 1875.72 J of work done. (see calculations.) That is a lot of work for a skill that is done almost 10 times in a match. Think about all the work being done!
Now that we have the amount of work done, we can find the amount of power generated. by simply multipying the work done by the change in time during the lineout, we find that there was 1250 watts of power generated by the players. Who would have though that lifting a guy into the air to fight for a ball, would actually include so many factors. In each lineout, both teams preform about 1876 Joules of energy and generate 1250 watts of power. Now add those numbers up for every time there is a lineout, and youve done a ton of work and produced a ton of power! Who knew?
A lineout in rugby is preformed when the ball goes out of bounds. a player on each team is lifted by two of his teammates in the air, and tries to retrieve a ball that is thrown in to play. The weight of the average professional rugby player is about 96kg. This means that in order to lift a player in a lineout to the highest point possible, there must be 1875.72 J of work done. (see calculations.) That is a lot of work for a skill that is done almost 10 times in a match. Think about all the work being done!
Now that we have the amount of work done, we can find the amount of power generated. by simply multipying the work done by the change in time during the lineout, we find that there was 1250 watts of power generated by the players. Who would have though that lifting a guy into the air to fight for a ball, would actually include so many factors. In each lineout, both teams preform about 1876 Joules of energy and generate 1250 watts of power. Now add those numbers up for every time there is a lineout, and youve done a ton of work and produced a ton of power! Who knew?
Conservation of Energy
When you see a kick you think, that simple, just kick the ball through the posts and move on with the game, but is it really as simple as you think? Theres a lot of energy put into a simple kick, a lot more than youd think, and let me explain to you how. When the ball is just sitting there on the tee, it has energy. When it is in the air, it has energy. Right before it lands, it has energy. Even though it is not a lot, there is still energy the ball is producing. It is this energy that guides the ball through the uprights, with the help of your kick ofcourse, and is crucial to kiking the ball accurately and powerfully.
When you see a kick you think, that simple, just kick the ball through the posts and move on with the game, but is it really as simple as you think? Theres a lot of energy put into a simple kick, a lot more than youd think, and let me explain to you how. When the ball is just sitting there on the tee, it has energy. When it is in the air, it has energy. Right before it lands, it has energy. Even though it is not a lot, there is still energy the ball is producing. It is this energy that guides the ball through the uprights, with the help of your kick ofcourse, and is crucial to kiking the ball accurately and powerfully.
A Rugby players diet
A Rugby Players Diet
If you think that rugby players
just go out and do their thing with no nutritional preperation, have i got news
for you. Theres a lot of work to putting in enough energy into the players
bodies than people take account of. The biggest rugby players diets require them
to eat almost 5000 kcals in a day! Lets change that into energy. 4.16 Joules =
1kcal. 5000kcals x 4.16 J = 20,800 J of energy!
This means
that a rugby player receive 20, 800 J of energy through food intake in a day!
With meals like pasta, or sandwhichs, these foods keep a rugby player
functioning, and gives them the energy to pay the game they love!
If you think that rugby players
just go out and do their thing with no nutritional preperation, have i got news
for you. Theres a lot of work to putting in enough energy into the players
bodies than people take account of. The biggest rugby players diets require them
to eat almost 5000 kcals in a day! Lets change that into energy. 4.16 Joules =
1kcal. 5000kcals x 4.16 J = 20,800 J of energy!
This means
that a rugby player receive 20, 800 J of energy through food intake in a day!
With meals like pasta, or sandwhichs, these foods keep a rugby player
functioning, and gives them the energy to pay the game they love!