Recent content by page123

Why does light still pass through when you have three filters and the first is vertical the second is rotated and the third is horizontal?

Is it because terminal velocity is defined as when the force of gravity is balanced by the force of drag? So since a heavier person has a heavier weight, the terminal velocity will be greater because it takes more time to balance out the weight while accelerating?

I edited out the ones I'm not stuck on, I'm not sure how I would interpret the ball rolling and stopping on the table (friction?) and about the heavy/light person parachute thing I'm getting two answers: 1) g = Fg/m, right? so they would be similar ratios but one has a higher mass and bigger...

Homework Statement Newton's 1st Law of Motion A ball rolled across the top of a pool table and slowly rolls to a stop. How would Aristotle interpret this behavior? Galileo? You? Newton's 2nd Law of Motion If a heavy person and a light person parachute together form the same altitude, and...

Just wondering if anyone's gonna' answer this =[

Any ideas?

Say I have to consider a situation like this: Say there are tensions (all the same) on each one and forces of gravity (different) on each one. Would the coordinate system there apply to each one in reference to their forces? In other words for the first mass, would Fnet = T - Fg1? For...

Are you sure about keeping the coordinate system consistent? Because on one pulley system where the mass is greater than the other one I saw T - Fg1 and Fg2 - T for each Fnet. If you had a consistent coordinate system the Ts would both be positive and the Fgs would both be negative. So: T - Fg1...

Interesting, so what would the signs be for all the forces on that inclined problem, if there were two tensions and the normal force of gravities?

Homework Statement What are the signs of the forces (positive + or negative -) acting on both situations? Situation 1: Situation 2: Homework Equations Not really necessary The Attempt at a Solution I'm not sure about Situation 1 at all, but I think I got Situation 2: If I have this...

I'm just wondering if the tension between the masses, that is the tension from the string, is different between each mass in the following situations. Like is the T between m1 and m2 different from the T between m2 and m3? Is it for both situations or is the T the same all around in one of the...

Just wondering if someone could reply to this.

What equation is V2-u2=2aS in basic form using vi, vf, a, d, and t? I'm still not able to fully to understand your solution, the rectangle is a degree symbol? So it's '(degree symbol sin 10 degree symbol)' I think it would be better if it was posted on the forum?

But doesn't Randhir use 'h' (the initial height) in his solution? Can't he solve for it? The solution is kind of confusing it's like ([] sin25 degrees = h/S)

So basically to do this problem would I do a Fnet for masses 1 and 2 with the acceleration and get the tensions for both of them? would those tensions be the same as in: fnet for mass 1 = m*a = 40*0 = T - fg1 = T - 40*9.8 = 0 fnet for mass 2 = m*a = 100*0 = T - fg2 = T - 100*9.8 = 0...