Respuesta :
Answer:
t = 3π/2
Explanation:
They ask us the collision points of the two particles, at the points where their coordinates collide they must be equal. Let's write the equations of the particles
Particle 1
x1 = 5 sin t
. y1 = 2 cos t
Particle 2
x2 = -5 + cos t
y2 = 1 + sin t
At the point of collision
x1 = x2
y1 = y2
Let's solve
5 sint = -5 + cos t
2 cos t = 1 + sint
Let's solve the system of equations
5 sin t = -5 + cos t
sin t = -1 + 2 cost
5 (-1 +2 cos t) = -5 + cos t
-5 + 10 cos t = -5 + cost
9 cost = 0
Cost = 0
t1 = 90º = pi / 2
t2 = 270º = 3pi / 2
We have two times for which the equations are fulfilled. To know if both times are correct, substitute in the equations of the position of the particles
t1 = π/2
Particle 1
x1 = 5, y1 = 0
Particle 2
x2 = -5, y2 = 1 + 1 = 2
We see that for this value the shock is not met
Let's try the other value t2 = 3π/2
Particle 1
x1 = -5, y1 = 0
Particle 2
x2 = -5, y2 = 1 -1 = 0
This point if it meets the shock of the particles,
The result is t = 3π/2
This question involves the concept of simultaneous equations and collision points.
The collision points of both particles are "(-5, 0)".
The collision point is the point where the coordinates of both the particles are the same:
[tex]x_1=x_2\\y_1=y_2\\\\5\ Sin\ (t) = -5+Cos\ (t)------ eqn(1)\\2\ Cos\ (t)=1+Sin\ (t)-------- eqn(2)\\\\[/tex]
Solving the simultaneous equations above by substitution. From eqn (2):
[tex]Sin\ (t)=2\ Cos\ (t)-1[/tex]
substitute in en (1):
[tex]5(2\ Cos\ (t)-1)=-5+Cos\ (t)\\9Cos\ (t)=0\\t = Cos^{-1}(0)\ \ \ ; \ \ \ 0\leq t\leq 2\pi\\\\t = \frac{\pi}{2}\ \ (OR) t = \frac{3\pi}{2}\ \[/tex]
For [tex]t=\frac{\pi}{2}[/tex]:
x₁ = 5, y₁ = 0
x₂ = -5, y₂ = 2
This does not satisfy the condition. Hence, this can not be the answer.
For [tex]t=\frac{3\pi}{2}[/tex]:
x₁ = -5, y₁ = 0
x₂ = -5, y₂ = 0
This pair satisfies the condition. Hence, the correct answer of the collision point is (-5, 0).
Learn more about the simultaneous equations here:
https://brainly.com/question/16763389?referrer=searchResults
The attached picture hows the collision point of two random simultaneous equations on graph.
