Asked by Jackie

There is a two member dog sled team pulling with all their strength in the middle of a snow storm. Dog
A is pulling with a force of 178 N at 15𝑜
and Dog B is pulling with 225 N at −10𝑜
. The sled and gear
weigh 980 N and has a coefficient of friction of 0.3 with the thick snow. The dog sled team is aiming for
wooden shelter straight ahead but are being pushed off course −28𝑜
from the wind towards a crevasse. If
the sled team is traveling with a velocity of 11 m/s what is the speed and direction of the wind?
Answered by Damon
Whoever wrote this problem assumed that the sled would have a velocity component of 11 m/s in the downwind direction due to the wind.
However a sled (or a ship} is not an airplane or a balloon. if nothing else is pushing it, the wind in fact might not move it at all. The ice or water will exert a force counteracting the wind force which depends on the lift and drag coefficients of the sled as well as the lift and drag characteristics of the sled/ice interface. Think about the sled being on tracks or wheels :)
Answered by closet
TKIug
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