Recent content by goeat

If the moon vanished, NASA would get blamed, and it would turn out that there was never any moon at all, just a government conspiracy so NASA could fake the moon landings.

Why not start with model rockets?

Ignore the cylinder. Say you made a X out of the two rods, one is the near vertical one on the floor, the other is the horizontal one offset to the right, with the same constraints of 1 inch of movement. At some near veritical angle, the X will fall to the right instead of the left. So you just...

If you can calculate the force, then the linear force will produce the same linear reaction regardless of the point of application of the linear force. If the linear force vector is not in the direction of the center of mass of the object, than a torque is also created. What isn't clear hear...

Take an extreme case. A weight hangs vertically from a wire mounted to a pole, and the wire also continues on to be connected to another pole. Here it's clear that the tension between the two parts of the wire is not the same.

If you're referring to the Space Shuttle, the Space Station, or other low orbiting rockets, they're at the fringes of the outer atmoshpere and experience some drag. If not for occasional boosts from the rocket engines, their orbits would eventually decay and they would return to Earth (or burn up).

What is the frequency range of photons? Can electrons emit energy packets of radio wave frequency objects in a manner similar to how they emit photons? Do gamma rays have properties similar to light, such as photons?

I'm not sure that the OP was concerned about modern versus classis usage. It's difficult to see this as "archaic" usage when there are current reference sources, such as the links I provided in previous posts, that use the "classic" definition, or include both definitions. Then again, if...

That's all I mean. I prefer the archaic usage of centrifugal force because it had a meaning. The "standard" usage of the term defines it to be non-existing. As posted previously, I am not alone in preferring the archaic usage of centrifugal force: How would you describe the forces of a...

VFR - visual flight rules, IFR - instrument flight rules. IFR applies when a pilot can't see a horizon, or a runway during a landing. Depending on the aircraft, there's a minimum ceiling of visibility requirement before landing is allowed.

The pipe already had angular momentum, equal to the rate that it was being spun at. It simply continued to retain this angular momentum once it was released. To stop this angular velocity, a countering torque force would be required.

For training pilots, visual only flight simulators are good enough. In the case of a large commercial aircraft, the g-forces aren't that high so it's not an issue. In the case of experienced fighter pilots, some high g manuevers in a simulator can result in the pilots getting "lack of motion...

"inertia reaction"--seems meaningless to me. You push on something; it pushes back. If there's a net acceleration an object, some or all of that "pushing back" is what some of us call an inertia reaction force, and in when this force is perpendicular to the direction of travel, some of us call...

I consider all of these to be 3rd law pairs: While turning, due to slip angle, a car's tires exert an outwards force on the pavement, and the pavement in turn exerts an inwards force onto the tires, which through the tires, wheels and suspension, exert an inwards force on the rest of the car...

I don't understand, it clearly seems to be just like any other reaction force. Any acceleration on an object, regardless of direction, creates a reactionary force. Why change the rules for the one case where the force just happens to be perpendicular to the objects direction of travel? Why...