Recent content by tartio

I think I got it, hopefully this is right. Since the angle of θ is actually simply the angle that is made with the horizontal, as in a unit circle... sin(θ) = \frac{-uw}{P} \frac{r-h}{r} = \frac{-uw}{P} r^2 - h = \frac{-uwr}{P} h = \frac{uwr}{P} + r^2

Here is the picture I have been using. Maybe I'm interpreting the problem wrong? Edit: Oh! Just saw your picture. Taking a look at it now... Edit2: To reach your solution, did you use the same method, however? Rather, is my next step to find a way to rewrite the sinθ in terms of R and H or...

I guess I'm not sure what you're getting at, since θ is the angle between r and P, and the torque is then r x P = rPsinθ. But it got me thinking, if you take the θ between r and P and subtract it from 180 to get the angle that r makes with the horizontal to reach P (because of the parallel...

Homework Statement A uniform sphere of radius r and weight W slides along the floor due to a constant horizontal force P applied by a string. Suppose the coefficient of friction is µ. Find the height of the string above the floor h. Homework Equations ƩT = 0 because there cannot be...

Homework Statement A very short 100 kg acrobat steps off a 10 m high platform and starts falling. The acrobat falls 9 m, then encounters a 1 m long spring connected at one end to the ground below. (a) What’s the spring constant so the acrobat just touches the ground (that is, so the...