Killer Peter - LS Upgrade

[Viott]

• Old calc: One of the Geumgang brothers lifts the cannonball - 4245.3908215518 kg (Class 5)

• New calc: Man waves a big cannonball - 30821.485234 kg (Class 50)

Only two brothers will be upgraded from Class 5 to Class 50.

 

[DarkDragonMedeus]

Looks simple enough if the calculations were approved.

 

[Viott]

Bump

 

[SeijiSetto]

I don't get where the ~2.647 meter length is coming from in the calc, when you're getting centripetal force.
The formula is (mv^2) / r, no? r being the radius of the swing, i.e the 1.69 meter length?

 

[Viott]

I don't get where the ~2.647 meter length is coming from in the calc, when you're getting centripetal force.
The formula is (mv^2) / r, no? r being the radius of the swing, i.e the 1.69 meter length?

2.647 meters is the radius of 5.2948106125 meters.

 

[SeijiSetto]

5.2948106125 meters is the radius of 2.647 meters.

i don't know what this means.
5.2948106125 meters is half of the circumference, you literally multiply the 1.69m length you measured by pi, i.e getting the arc length of a 180 degree arc.
when using (mv^2) / r, you would plug ~1.69m into r because that is the radius of the circle that has the centripetal motion in it.

 

[Viott]

i don't know what this means.
5.2948106125 meters is half of the circumference, you literally multiply the 1.69m length you measured by pi, i.e getting the arc length of a 180 degree arc.
when using (mv^2) / r, you would plug ~1.69m into r because that is the radius of the circle that has the centripetal motion in it.

My mistake, I used the arc length of the semicircle instead of the radius of the semicircle.

 

[Viott]

i don't know what this means.
5.2948106125 meters is half of the circumference, you literally multiply the 1.69m length you measured by pi, i.e getting the arc length of a 180 degree arc.
when using (mv^2) / r, you would plug ~1.69m into r because that is the radius of the circle that has the centripetal motion in it.

Is he okay now?

 

[Reiner04]

This is calc thing mostly, so I'll be fine with Setto eval.

 

[SeijiSetto]

Is he okay now?

it's fine now, i've left a comment on the blog saying the same thing

 

[BlackCat]

I’m not sure if I, as someone who isn’t a CGM, am allowed to ask this. If not, I apologize.

“Has this upgrade been accepted yet? If it has been accepted, I will add it to the main page of KillerPeter.”

 

[Viott]

“Has this upgrade been accepted yet? If it has been accepted, I will add it to the main page of KillerPeter.”

Yes