Recent content by sodr2

https://www.physicsforums.com/latex_images/24/2483850-2.png whats that big s line thing for lol

Okay... If on a F vs x graph, you want to find work... F = k x W = F d Then shouldn't work = k xd = kx^2?

I just watched this http://www.youtube.com/watch?v=eVl5zs6Lqy0" video... If W = KE ---> Fd = [mv^2] / 2 If in a spring, force is equal to a constant (k) times how far its been stretched (d), then subbing kd for F in the first equation... Kd^2 = [mv^2]/2 Rearranging, E = kd^2 But in...

:frown: Thanks.

Btw, what is dyn?

Homework Statement Calculate thy pressure 150m below the surface of za sea. The density of sea water is 1.026 g/cm3. 2. Homework Equations & The attempt at a solution The pressure will depend on how much water is above you... F = mg F = pVg --- since density = mass per volume F =...

Thank You! Here's a present:

I need help with the units... We have 24.5 N... so should we convert 600cm^2 and 1g/cm^3 into meters? How do I do this? 600cm^2 * 1g/cm^3 = 600 g/cm 600g/cm * 100cm/m * 1kg/100g = 60 kg/m Nevermind.

I like what I'm hearing... I'll tackle this question shortly.

I explained the equation in my first post - it's just P = 1/2 mv2. And it's from the textbook, so I'm pretty sure I should use it. Here's my textbook explaining the equation (7.5 - pg. 87-88)...

Power = F*v? I think it's better to go with: P = 1/2 *sqrt* of: [W (1 - pw/p)]3 / Apw We have weight, density of water & body, area of limbs, so technically we should be able to solve for P... but as I said the density of water & the woman's body (as mentioned in the question) are the...

Homework Statement With the nose above the water, about 95% of the body is submerged. Calculate the power expended by a 50-kg woman treading water in this position. Assume that the average density of the human body is about the same as water (p = pw = 1 g/cm3 ) and that the area A of the limbs...

Ill go ahead and give you the question I have been working on: A ladder which is 4 meters long masses 40 kg and has its centre of gravity 1.5 m up along its length, leans against a frictionless wall and rests on a frictionless floor. To keep it from slipping, it is tied to the wall with a...

How do you know when to use the sum of all forces acting on a body compared to the sum of all tourques acting on a body when solving for these types of questions involving ladders, hanging signs, etc...

ohh ok, thanks for your help.