Two forces, F⃗ 1 and F⃗ 2, act at a point. F⃗ 1 has a magnitude of 9.40 N and is directed at an angle of 58.0 ∘ above the negative x axis in the second quadrant. F⃗ 2 has a magnitude of 6.20 N and is directed at an angle of 53.1 ∘ below the negative x axis in the third quadrant. A)What is the x component of the resultant force? B)What is the y component of the resultant force? C)What is the magnitude of the resultant force?
To solve this problem, we can use vector addition. We can break each force into its x and y components using trigonometry, and then add the components to find the resultant force.
A) The x component of F⃗ 1 is given by:
F⃗ 1,x = F⃗ 1 cos(58.0°)
F⃗ 1,x = (9.40 N) cos(58.0°)
F⃗ 1,x = 4.53 N
The x component of F⃗ 2 is given by:
F⃗ 2,x = F⃗ 2 cos(-53.1°)
F⃗ 2,x = (6.20 N) cos(-53.1°)
F⃗ 2,x = 3.17 N
The x component of the resultant force is:
Fₓ = F⃗ 1,x + F⃗ 2,x
Fₓ = 4.53 N + 3.17 N
Fₓ = 7.70 N
B) The y component of F⃗ 1 is given by:
F⃗ 1,y = F⃗ 1 sin(58.0°)
F⃗ 1,y = (9.40 N) sin(58.0°)
F⃗ 1,y = 7.92 N
The y component of F⃗ 2 is given by:
F⃗ 2,y = F⃗ 2 sin(-53.1°)
F⃗ 2,y = (6.20 N) sin(-53.1°)
F⃗ 2,y = -4.94 N
The y component of the resultant force is:
Fᵧ = F⃗ 1,y + F⃗ 2,y
Fᵧ = 7.92 N - 4.94 N
Fᵧ = 2.98 N
C) The magnitude of the resultant force is given by:
F = sqrt(Fₓ^2 + Fᵧ^2)
F = sqrt((7.70 N)^2 + (2.98 N)^2)
F = 8.28 N
Therefore, the x component of the resultant force is 7.70 N, the y component of the resultant force is 2.98 N, and the magnitude of the resultant force is 8.28 N.
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