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center
In physics, the center of mass of a distribution of mass in space (sometimes referred to as the balance point) is the unique point where the weighted relative position of the distributed mass sums to zero. This is the point to which a force may be applied to cause a linear acceleration without an angular acceleration. Calculations in mechanics are often simplified when formulated with respect to the center of mass. It is a hypothetical point where the entire mass of an object may be assumed to be concentrated to visualise its motion. In other words, the center of mass is the particle equivalent of a given object for application of Newton's laws of motion.
In the case of a single rigid body, the center of mass is fixed in relation to the body, and if the body has uniform density, it will be located at the centroid. The center of mass may be located outside the physical body, as is sometimes the case for hollow or open-shaped objects, such as a horseshoe. In the case of a distribution of separate bodies, such as the planets of the Solar System, the center of mass may not correspond to the position of any individual member of the system.
The center of mass is a useful reference point for calculations in mechanics that involve masses distributed in space, such as the linear and angular momentum of planetary bodies and rigid body dynamics. In orbital mechanics, the equations of motion of planets are formulated as point masses located at the centers of mass. The center of mass frame is an inertial frame in which the center of mass of a system is at rest with respect to the origin of the coordinate system.
1 box, Vintage, Collectible Remington 50 Center Fire Cartridges, 45 AUTO TARGETMASTER 185 GRAIN WADCUTTER Index 6745 - KLEANBORE PRIMING
FOR SALE IN PORTLAND, OR METRO ONLY. WILL NOT SHIP UNLESS YOU HAVE A LOCAL (PORTLAND) FFL THAT I CAN DROP IT OFF AT AND THEY WILL SHIP TO YOU.
This S/W 45 ACP
is nice and very clean...
1 cylinder fired through it...
Everything supplied from the manufacturer is present...
A bag of moon clips included...
Excellent condition unmodified Shield Plus Performance Center with factory ported barrel/slide, fiber optic sights, and co witnessed Crimson Trace red dot.
Package includes:
-(5) 13 round magazines.
-(1) 10 round magazine with added pinky extension, factory flush base pad included.
-Tenicor...
I have six bricks of freshly made and acquired Lapua Center-X .22 ammo.
$170 per brick. I'm off I-5 at exit 102 in Tumwater. Can meet somewhere or willing to ship at UPS cost.
Selling my personal SW Shield Performance Center 40SW...factory ports....4 magazines....2 Tagua holsters and a Mitch Rosen holster.... Fiber optic sights
I am 99 percent sure I have the original box somewhere as well..
I bought this brand new at the time the performance centers shields were...
For sale is a Thompson / Center Arms Contender:
- .45 LC / .410
- Break Action Pistol
- 10" Barrel w/ Choke
- Stainless Steel w/ Synthetic Grips
- Est. 1999/2000 Production
This firearm is used and shows some holster wear/ regular outdoor use. Asking $725.
Please PM any questions and thank...
Thompson Center 2.5-7x28 Handgun Scope LER Pistol TC Contender Vintage JAPAN Scope as new no box comes with mounting supplies for a Tompson Contender it's the recoil proof model with the lifetime warranty. Japan optics nice and bright. Available in se Portland. Lonny
Smith and Wesson Performance Center 642 .38 special j frame. (No internal lock)
Brand new in box. Unfired.
Buyer covers transfer fee.
$560 cash obo
Trade for CZ P-01 or SP-01
Thompson Center 2.5-7x28 Duplex Reticle Handgun Scope LER Pistol TC Contender vintage JAPAN
Scope as new no box comes with mounting supplies for a Tompson Contender it's the recoil proof model with the lifetime warranty. Japan optics nice and bright. Available in se Portland. Lonny
Possible looking to sell this gun and can't find a comparable gun to get my asking price. Bought this several years back for a Alaska fishing trip now it's a safe queen. The certificate it came with says it's 1 of 500, I'm guessing this adds some value. Thanks for the imput
M&P Shield Plus Performance Center, 4" model, with three 13 round magazines, Vedder holster, and Vedder mag carrier. I bought it from a member on here last year. However, it was another impulse buy of mine. The pistol does not fit any role for me as I already have a backup carry and a lazy...
Selling my compass in 6.5 creedmoor
Rife is stock except muzzle brake and bipod
Nothing wrong with the rifle.
I don’t shoot 6.5 any more
$250 firm
503-706-6617
I’m located in Hillsboro
And would prefer to meet no more then 20 min away.
Performance Series features a ported Barrel, Hi-Vis front and rear sights, performance center trigger. This one has a manual safety, no slide cut. Comes with one 8 round and one 7 round magazines, Talon grip tape. I have fired around 400 rounds through it. I bought new in 2015 and have not...
Originally for Journey/Billy Idol, but Toto replaced Billy Idol, which is the reason I’m selling these. Two tickets, section 302, row H, seats 1&2. $150 for the pair or will trade for one ticket of equivalent value to Roger Waters at the Moda Center in September. I can do the transfer of tickets...