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zanick
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if you drop a spring that is elongated via its only weight (slinky) vs another spring that is on its side... will both hit the ground at the same time?
Will a Vertical Spring Drop at the Same Time as a Horizontal Spring?
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When a vertical spring and a horizontal spring are dropped from the same height, they will hit the ground at the same time if their centers of mass are aligned and they are at rest initially. This conclusion holds true under the assumption that air resistance is negligible. The discussion references a video that visually demonstrates this concept. The behavior of both springs during the fall is consistent due to their equal starting conditions. Thus, both springs will indeed land simultaneously.
The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
Hello!
I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below.
Here is how I wrote the condition of equilibrium forces:
$$
\begin{cases}
F_{g\parallel}=F_{t1}+F_{t2}, \\
F_{g\perp}=F_{r1}+F_{r2}
\end{cases}.
$$
On the other hand...
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