Force equals the cosine of the direct…no, that’s not it!…Darn it!

İ’m guessing no one noticed P=mV

I wish I was better at physics and math. I’m brilliant at programming but as soon as we start talking advanced differentiation and integration I zone out.

@aibr  
Nice. I’ve got a bachelors in physics and have taught it before myself. Might go into physics teaching again since I love the subject so much.

@Nittany Discord  
I’m a physics teacher.

@aibr  

What kind of strange emoticon is this?

@Inkan1969  
I’ve seen J(n)(t) for Bessel functions of order n. I think they mean sine, though I’ve never seen sn used for sine.

It should be F sin(theta). I’ve seen sn(theta) used for a Bessel function instead.
 
In the equation for radial motion, that should be an alpha (angular acceleration) instead of an a.

@aibr  
I saw it there.
 
And I agree. They didn’t pass this over with a physicist, but they got close enough that it doesn’t matter to anyone but physics majors or anyone with a physics degree.

@Nittany Discord  
Sure, and I have no problem with it. I just pointed out that they most probably didn’t asked a mathematician to do this.
 
“I’m not sure why they didn’t use alpha”
 
The funny thing is that they already used alpha. Look near the bolling ball.

@aibr  
You’re right. I’m not sure why they didn’t use alpha, but I know they’re not going for 100% accuracy with the formulas. It’s close enough for the show. Variables can be swapped in equations without changing their meaning, but it’s less intuitive not to use well-known and consistent variables.

@Nittany Discord  
Except there’s ‘a’ in that equation, which is clearly acceleration, and not angular acceleration, shown in second law of Newton F=ma.

@aibr  
The equations with thetas and omegas is angular position. It’s basically the position of something if it were going in a circle.
 
Also deltas not d’s because this isn’t calculus-based physics.

>delta signs  
>not d’s
 
@ThruMuffin  
Of course not. This is high school-tier stuff.

My bachelors in physics is finally useful thanks to this episode.

 
Piece of zetta cake

Science!  

F=ma  
Friendship=magic

It was my understanding that there would be no math.

@eden89  
They might have tried that, but as it is now they are pure gibberish with some actual equations.

@ThruMuffin  
Most likely no. There are some correct things in this, like how work is equal to force times distance it affects (W=F(Δ)scos(θ)), but the Force F that affect to the ball with theta angel makes no sense. What force is pulling bolling ball a bit upward and backward.
 
Also they seems to confuse W (work) to revolutions per minute ω.
 
And θ=θ_0 + w_0t+½at^2 seems to be equation for position, where θ_0 is original position, w seems to be speed and a is acceleration. Of course in this context it doesn’t make any sense, because here θ is clearly the angle between force F and the plane level.
 
Also the equation -Fcos(θ)+f_ g=-Ma is pointless, if f_g is meant to be ball’s gravitational force (also known as weight), because ‘a’ is clearly ball’s acceleration among x-axis, but f_g have only y-axis component.

@eden89  
Makes sense!

@Ilsor
 
the quantity of matter in a body

@Background Pony #C2A6  
Yes, but what is mass?

@Background Pony #C2A6  
Indeed. :>