- #1
cshum00
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So i made up this simple setup:
I have a √(2) meter stick slanted on a friction-less surface on a 45° angle. And i want to determine the final x and y positions of the points A and B.
For point A:
A.1) Solving for ax
[tex]\sum F_x = T_x = F_x[/tex][tex]Tcos(\theta) = ma_x[/tex][tex]a_x = \frac{Tcos(\theta)}{m}[/tex]
A.2) ay=0. It is zero because the surface does not allow point A to move downward.
For point B:
B.1) ax is the same as point A because both move on the x-axis at the same rate.
B.2) Solving for ay
[tex]\sum F_y = T_y - F_g = F_y[/tex][tex]Tsin(\theta) - mg = ma_y[/tex][tex]a_y = \frac{Tsin(\theta)}{m} - g[/tex]
Then how do i compile these accelerations into the kinematic equations? Assuming that:
-The initial velocity v0=0 for both axis and points
-The initial position of point A is A0(x,y)= (10,0)
-The initial position of point B is B0(x,y)= (11,1)
-The initial angle θ0=45
I know that θ is my variable since the angle will become smaller all the way to zero. But i also see that the tension T on the stick also varies with the angle. So i have no idea how to move from here.
I have a √(2) meter stick slanted on a friction-less surface on a 45° angle. And i want to determine the final x and y positions of the points A and B.
For point A:
A.1) Solving for ax
[tex]\sum F_x = T_x = F_x[/tex][tex]Tcos(\theta) = ma_x[/tex][tex]a_x = \frac{Tcos(\theta)}{m}[/tex]
A.2) ay=0. It is zero because the surface does not allow point A to move downward.
For point B:
B.1) ax is the same as point A because both move on the x-axis at the same rate.
B.2) Solving for ay
[tex]\sum F_y = T_y - F_g = F_y[/tex][tex]Tsin(\theta) - mg = ma_y[/tex][tex]a_y = \frac{Tsin(\theta)}{m} - g[/tex]
Then how do i compile these accelerations into the kinematic equations? Assuming that:
-The initial velocity v0=0 for both axis and points
-The initial position of point A is A0(x,y)= (10,0)
-The initial position of point B is B0(x,y)= (11,1)
-The initial angle θ0=45
I know that θ is my variable since the angle will become smaller all the way to zero. But i also see that the tension T on the stick also varies with the angle. So i have no idea how to move from here.