A heavy sled is being pulled by two people, as shown in the figure. The coefficient of static friction between the sled and the ground is u, = 0.603, and the kinetic friction coefficient is Hy = 0.419. The combined mass of the sled and its load is m = 276 kg. The ropes are separated by an angle o = 22.0°, and they make an angle 0 = 31.1° with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? minimum rope tension:

A heavy sled is being pulled by two people, as shown in the figure. The coefficient of static friction between the sled and the ground is u, = 0.603, and the kinetic friction coefficient is Hy = 0.419. The combined mass of the sled and its load is m = 276 kg. The ropes are separated by an angle o = 22.0°, and they make an angle 0 = 31.1° with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? minimum rope tension:

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Chapter1: Units, Trigonometry. And Vectors

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Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

A heavy sled is being pulled by two people, as shown in
the figure. The coefficient of static friction between the
sled and the ground is us
0.603, and the kinetic friction
%3D
coefficient is µ = 0.419. The combined mass of the sled
and its load is m 276 kg. The ropes are separated by an
angle o = 22.0°, and they make an angle 0 = 31.1° with
the horizontal. Assuming both ropes pull equally hard,
what is the minimum rope tension required to get the
sled moving?
minimum rope tension:
If this rope tension is maintained after the sled starts moving, what is the sled's acceleration?
acceleration:
m/s?

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