kynlie1760
01.12.2020 •
Physics
Jill is pulling a 200. Newton sled through the snow at constant velocity using a horizontal force of 10. Newtons. What is the kinetic coefficient of friction of the sled on the snow?
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Ответ:
The kinetic coefficient of friction of the sled on the snow is 0.05
Explanation:
The given parameters are;
The weight of the sled Jill is pulling, W = 200 N
The force with which Jill is pulling the the sled = 10 Newtons
The nature of the speed with which the sled is pulled = Constant speed
Therefore, given that the only opposing force to the pulling of the sled = The force of kinetic friction, we have;
The force with which Jill is pulling the the sled = 10 Newtons = The force of kinetic friction,
The force of kinetic friction = The weight of the sled, W × The kinetic coefficient of friction of the sled on the snow,
= W ×
= /W = 10 N/(200 N) = 0.05
The kinetic coefficient of friction of the sled on the snow = = 0.05.
Ответ:
compared to 9.8 m/s² on Earth ... a ratio of about 2.53 .
So if a person or object were somehow transported to Jupiter,
he/it would weigh
(2.53) times (Earth weight)
there.