Recent content by bang

I put a picture up now.

I don't really have access to a diagram, but basically its a semi-circle, with a marble resting on the side of the bowl. The angle theta is the angle from a line that is straight up from the center of the bowl.

Homework Statement A bowl has a hemispherical inside surface with radius R = 15 cm, and is sitting in the exact center of a spinning table that completes one full turn in 0.72 s. A small marble is dropped into the bowl. After the marble has stopped rolling around, it will come to rest...

Gravitational potential at the top, right before the spring both kinetic and still gravitational potential, and then at the bottom kinetic would be 0 and the spring potential would be at it's maximum?

So I have to figure out the point at which the bungee would completely counteract the force of gravity pulling down. I get 31.85m, which brings the lowest point to basically 70m but that isn't the correct answer.

The elastic force pulling up, and the gravitational force pulling down. How would I relate the two though?

So for the first phase I just used her potential energy from the bridge to the extension of the bungee, the next interesting time is when the bungee starts affecting her fall, and the third interesting time is when she is completely stopped at her lowest point. I've found the important...

Homework Statement You have persuaded your friend Astrid to attempt an illegal bungee jump from the New River Gorge Bridge. You will provide the bungee cord which has a total length of 40 m and a spring constant of k = 16 N/m. During the jump, Astrid will first fall freely for a distance equal...

That was the function given to us on the test as best as I can remember. It might have been something like f(x)= x + f(x)^3, but definitely f(x) = x + f(x)

Homework Statement Assume that the Derivative Rule for Inverses holds. Given that f(x) = x + f(x), and g(t) = f-1(t), which of the following is equivalent to g'(t)? a. g'(t) = 1 + t2 b. g'(t) = 1 + t4 c. g'(t) = 1 + g(x) d. g'(t) = 1 / (1 + t4) Homework Equations The Attempt at a...

Hm ok, thanks for the help!

The result you get is in ft/sec but I convert it to mph, and the final answer is in mph. So for the slugs conversion, I used w=mg, which became .077=m*(32.2), and the m=.0024 Then I just plug all the values in and solve HP = .5*(Cd)*(Ap)*ρ*V^3 330 * 550 = .5(.29)*(22)*(.0024)*V^3 181500 =...

So I converted the mass density of the fluid using your equation, but I still get a wrong answer. It's closer but still not correct. I don't see where I could be going wrong.

Only the mass density of fluid is in lbm, so I would need to convert the mass density of fluid? I don't understand.

Homework Statement So for my intro engineering class one homework problem is given as follows. "Considering only aerodynamic drag force, calculate the maximum speed (in mph), that a vehicle would experience with the following specifications." Horsepower = 330 Mass density of fluid = .077...