What are the values of a and b in this vector equation?

In summary, the problem involves finding the values of a and b in the equation a\vec{A}+ b\vec{B} + \vec{C} = 0, where \vec{A} = (75, -60), \vec{B} = (-16, 60), and \vec{C} = (84,16). The magnitude of the resultant vector is zero. To solve this, you would need to use a method for solving systems of simultaneous equations.
  • #1
renncat2
3
0
Let a[itex]\vec{A}[/itex]+ b[itex]\vec{B}[/itex] + [itex]\vec{C}[/itex] = 0, where [itex]\vec{A}[/itex] = (75, -60), [itex]\vec{B}[/itex] = (-16, 60), and [itex]\vec{C}[/itex] = (84,16). I need to find the value of a and b. I really have no idea where to start with this problem any help would be great!
 
Physics news on Phys.org
  • #2
renncat2 said:
Let a[itex]\vec{A}[/itex]+ b[itex]\vec{B}[/itex] + [itex]\vec{C}[/itex] = 0, where [itex]\vec{A}[/itex] = (75, -60), [itex]\vec{B}[/itex] = (-16, 60), and [itex]\vec{C}[/itex] = (84,16). I need to find the value of a and b. I really have no idea where to start with this problem any help would be great!
Welcome to Physics Forums.

You have two equations, with two unknowns. How do you suppose you could solve them?
 
  • #3
So far I found the magnitude of the resultant displacement. (Rx = 144, Ry = 16, [itex]\vec{R}[/itex] = 144.886)
 
  • #4
renncat2 said:
So far I found the magnitude of the resultant displacement. (Rx = 144, Ry = 16, [itex]\vec{R}[/itex] = 144.886)
The magnitude of the resultant vector is zero, by definition.

How do you normally solve systems of simultaneous equations?
 
  • #5
i don't know. can you give me an example?
 

FAQ: What are the values of a and b in this vector equation?

What are vectors with constants?

Vectors with constants refer to a vector that is multiplied by a constant value, resulting in a new vector with a different magnitude and possibly direction. This is commonly used in vector operations and calculations.

How do you represent vectors with constants?

Vectors with constants are typically represented as [constant] x [vector] or [vector] x [constant] depending on the notation used. It is important to note the order of the constant and vector when representing them.

What are some applications of vectors with constants?

Vectors with constants are commonly used in physics and engineering to represent forces and velocities. They are also used in computer graphics to represent transformations and animations.

How do you perform operations on vectors with constants?

To perform operations on vectors with constants, you can simply multiply the constant value to each component of the vector. For example, if you have a vector v = (x, y, z) and a constant c, the resulting vector would be c * v = (cx, cy, cz).

Can vectors with constants be used in higher dimensions?

Yes, vectors with constants can be used in any number of dimensions. The process of multiplying the constant value to each component of the vector remains the same, regardless of the dimensionality of the vector.

Back
Top