A team of dogs pulls a sled across the snow. The weight of the loaded sled is 2,200 N. The coefficient of friction is 0.15. How
2 answers:
Answer:
330 N
Explanation:
In order to calculate the frictional force, you just have to use the next formula:
Now you just have to insert the values into the formula:
So the friction force is 330 N, from the weight and the coefficient of friction with the ground, so the dogs only have to pull with a combined force of 330 N.
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Answer:
30.36°
Explanation:
By using linear momentum; linear momentum can be expressed by the relation:
where ;
m= mass
= velocity of components in the x direction
= velocity of components in the y direction
If we consider the east as the positive x and north as positive y which is synonymous to what we usually have on a graph.
Then;
Initial momentum =
=
However, the masses stick together after collision and move with a common velocity:
∴ Final momentum =
=
From the foregoing ;
initial momentum = final momentum
So;
Finally;
The required angle θ =
θ =
θ =
θ = 30.36°