Skip to comments.Errant 'Mythbusters' cannonball hits home in Dublin
Posted on 12/07/2011 6:54:14 PM PST by marktwain
A cannonball misfired by the "Mythbusters" TV show crew blasted through an East Dublin home Tuesday afternoon while its occupants were asleep. It then smashed through a window of a minivan parked a few hundred feet away.
No one was injured, and the home's residents did not wake up until the dust was settling on top of them, said an Alameda County Sheriff's Office spokesman.
The cannon was shot at the Sheriff's Office bomb range behind Santa Rita Jail about 4:15 p.m., said the spokesman, J.D. Nelson, who is also a consultant for the Discovery Channel TV show. He had been at the site with show producers all day, he said, though he said he was not by the cannon when it fired.
which they built -- at the range more than 50 times without incident, Nelson said.
Tuesday was different.
The cannonball was supposed to go through a few water-filled barrels and a concrete wall. Instead, it passed over the barrels, through the wall, and then took a "very unfortunate bounce that sent the ball skyward," Nelson said.
About 700 feet away, it bounced in front of a home on Cassata Place, then tore upward through the home's front door and out midway up the back wall of the two-story house. Light could be seen shining through a round, cantaloupe-sized hole from inside the house out to Tassajara Road.
(Excerpt) Read more at contracostatimes.com ...
LOL it was bound to happen eventually.
Can’t wait to see this episode! Also, I’m waiting for the knee-jerkers to scream that “something needs to be done!!!!” about the show.
Wow! That’s a heck of a lesson in “inertia.”
They were cleaning it and it just went off. Coulda happened to anybody.
Now that’s a cannonball...
I’m actually mostly amazed that the Sheriff’s department has a bomb range.
What is it they say at the beginning of the show? “The Mythbusters are experts with years of professional experience. Don’t try this at home”.
I wonder what their insurance rates are to film a show like that?
It's called grazing fire with solid shot. Was a favorite for about a century. Ugly results into massed ranks. It just don't stop. See Gettysburg for the results.
You shouldn’t be, given what section of the country it’s in, and also given the time we live in.
Wouldn't you? If you could? I know I would.
Well, technically momentum, not inertia...
WEll, I guess that their insurance premiums just went up.
I'm still working on the build/buy decision on the part of the timbers. I could buy a woodlot, rent a portable sawmill... and maybe actually get the trebuchet with a few $$s from the woodlot.
Or I could just go to Lowes and have it next week. And be out the cash and opportunity cost.
I'm torn. It's a certain cognitive humdinger.
That's by the Camp Parks Army Reserve Base. They should have known better. They should have aimed the cannon at Pleasanton. We hate Pleasanton. It's too... pleasant.
In the Civil War many a MidWest farm boy lost a lower leg when he kicked at a cannonball rolling through the Infantry lines. Mother Nature in the name of inertia is a bitch!
I thought the headline was a metaphor, and not a very good one. But they’re talking about a real canonball!
I just checked on Google Earth. Ann Arbor doesn't have a city wall. So forget the siege towers, and concentrate on arty, foot, and horse.
Yup, See Post 23.
Northern exposure had a couple of interesting trebuchet moments.
It went all the way from Alameda County, California to Ireland? Wow!
I rarely watch the show any more. Having BHO on, and sucking up to Jon Stewart was way too much to overlook.
Any way, I saw an early epi in which a producer, on the phone with the insurance carrier, prevented one of them from trying some movie stunt [that Buster survived with shock tags intact] because the insurance carrier wouldn't approve.
I wish I hadn't seen your dratted picture. I'm going to spend the next 2 hours stuck in a spread-sheet, and pulling prices. ;)
And figuring out how to explain to my heirs that daddy just has different hobbies....
I won't have to explain it to my grandsons... They get that kind of 'go boom' stuff.
Each show probably covered under a blanket general liability policy written for the production company and then placed under several surplus policies full of exclusions.
The eternal quest of the hand loader. How much powder can I put in that case. How much lead can I put in front of the powder with out the whole damn thing blowing up and how far and how fast will it go, accurately of course. Might I be so bold as to suggest they forgot the part about accuracy and how far.
It reminds me of my youth. In 1961 (I am old now) I was doing a bit of experimenting with acetylene. I figured out how to make it and then decided to burn some. Unfortunately due to my ineptness I allowed some air to get in the mixture. It did not burn, it exploded along with the glass container it was in. My grandmother came running out of the house to where I was. I had numerous small scratches and cuts on my arms but nothing to my face and eyes. She asked what happened. I answered 100% truthfully, "I think I made a mistake."
She did not know about the nitroglycerin that I had made and keep in the freezer. I disposed of it post haste.
My best friend in high school was the son of a chemist. His dad was a great guy. Unfortunately he gave us unsupervised access to his lab. It is a damn miracle that we did not blow up both our houses.
“I wonder what their insurance rates are to film a show like that?”
About 5 time what they were before this stunt!
“Inertia: tendency of an object to resist changes in its velocity.”
Major ooops! If only they’d make this into a show entitled, “We are professionals, please do not attempt this at home”, lol.
You might want to review what happened with the Roloff's pumpkin chunkin' trebuchet on "Little People, Big World" from a few seasons ago. Not a pretty sight. Two in the hospital.
A continent and an ocean: some shot!
Love this “Unpimp The Auto” VW commercial using a trebuchet.
The other two are funny, also.
Where do you think they dispose of the toy guns, chicken fingers and Advils seized from elementary school felons?
You have a road tractor (and a class A license) to pull the trailer, or is it a goose neck rig that say, a 1 ton or better PU with a fifth wheel hitch could haul?
That's by the Camp Parks Army Reserve BaseI didn't know that was still there. My oldest brother was in the Air Force and was stationed there around 1955.
It’s been a long time since I took physics but as I remember it inertia was the tendency of a body at rest to stay at rest.
Or in motion. To paraphrase Newton, inertia is the tendency of a body to resist a change in its state, whether it is at rest or moving at a uniform speed in a straight line.
Roughly speaking, because of inertia it will take the same amount of energy to stop a cannonball, as it does to fire it out of the cannon. Which is why they don't stop moving when they hit houses, cars, redcoats, and so forth.
“Its been a long time since I took physics but as I remember it inertia was the tendency of a body at rest to stay at rest. Or in motion.”
I forgot that last part, thanks.
Momentum vs Inertia
Inertia and momentum are two concept involved in the study of motion of solid bodies. Momentum and inertia are used to describe the current state of the object. Both inertia and momentum are concepts related to the mass of the object. Inertia and momentum are relativistic variants, which mean the equations for calculating these properties vary when the velocity of the object approaches the speed of light. However, Inertia and momentum plays a very important role in both Newtonian mechanics (classical mechanics) and relativistic mechanics.
Momentum is a vector. It is defined as the product of the velocity and the inertial mass of the object. Newtons second law is mainly focused on momentum. The original form of the second law, force = mass x acceleration, can be written in terms of velocity change as: force = (mass x final velocity mass x initial velocity)/time. In a more mathematical form, this can be written as change of momentum/time. The acceleration described in Newtons formula is actually an aspect of momentum. The momentum is said to be conserved if no external forces act on a closed system. This can be seen in the simple instrument balance balls, or scientifically known as Newtons cradle. Momentum takes the forms of linear momentum and angular momentum. The total momentum of a system is equal to the combination of linear momentum and angular momentum
Inertia is derived from the Latin word iners, which means idle or lazy. Inertia is a measurement of how lazy the system is. Inertia of a system gives us the meaning how hard it is to change the current state of the system. The higher the inertia of a system, harder it is to change the velocity, acceleration, direction of the system. Objects having higher masses have higher inertia. Thats why they are hard to move. Given that it is on a frictionless surface, a moving higher mass object would be hard to stop too. Newtons first law gives a very good idea about inertia of a system. It states an object not subject to any net external force, moves at a constant velocity. This tells us that an object has a property that is not changed, unless, there is an external force acting upon it. An object at rest can also be considered as an object having null velocity. In relativity, the inertia of an object tends to be infinity when the speed of the object reaches the speed of light. Hence an infinite force is required to increase the current velocity. It can be proved that no mass can reach the speed of light.
What is the difference between momentum and inertia?
- Momentum is a physically calculable property, while inertia cannot be calculated using a formulae.
- Inertia is just a concept to help us understand and define mechanics better.
- While, momentum comes in the forms of linear momentum and angular momentum, the inertia comes only in one form.
- Momentum is conserved in some cases. Momentum conservation can be used to solve problems. Inertia doesnt have to be conserved in any case.
...and nothing describes the difficulty of stopping or starting federal programs like the term "bureaucratic inertia"!
ertia = moving
inertia = not moving
ertia minor = moving just a little
Thanks...and don’t forget to tip the waiters.