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Sultanphys
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Is the pressure of gas at any point within mostly due to particles collisions rather than weight of gas above point considered?
Is Gas Pressure in a Weightless Environment Mainly Due to Particle Collisions?
AI Thread Summary
Gas pressure is primarily due to particle collisions rather than the weight of the gas above a point. In a weightless environment, such as a balloon in a non-gravitational field, the pressure remains relatively constant compared to a gravitational field. The weight of the gas influences the frequency of particle collisions by altering the number of particles per unit volume. This principle differs for liquids, where pressure is significantly affected by the weight of the liquid above. Overall, particle collisions are the main contributor to gas pressure regardless of gravitational influence.
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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