ACCELERATION
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The Dog weight pull competition is an
example of a great amount of force put into pulling a large amount of
weight over a specified distance. Because the mass and force are so
large, the acceleration is going to be small. But in this competition
speed is not the key to winning.
In dog sled racing the greater number of dogs, the more pulling force.
These dogs only have to pull the weight of the sled and driver. The
distance, however, is much greater. More pulling force and less
mass, therefore the acceleration will be greater and the dogs can
pull for longer distances.
The relationship is
shown in F = M*A. But if we wanted to solve for the acceleration A =
F/M. Acceleration is also mathematically defined as the change in
velocity over the change in time. Acceleration is the time rate of
change of velocity (Hecht, 2003).
Fun Fact:
The
2003 heavy weight World Championship Dog Weight Pull was won by
Garth who pulled 2300 lbs in 6.88 seconds. The course of 25 feet must
be completed within 60 seconds. Garth is owned by Dean Fritz of
Wasilla, Alaska.
<http://visitnorway.com/dog_sledding>
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