Recent content by rwssman

Homework Statement I want to find the period of the satellite. Homework Equations mg = mv^2/r The Attempt at a Solution I derive the equation mg = mv^2/r v = sqrt(gr) v = ωr and ω = 2π/T T = 2π/ω = 2πr/v Then, T = 2πr/sqrt(gr) But the answer is 2πr/R * sqrt(r/g). I don't know why? Is...

OK, Now I drew a diagram and solve problem number 1 and 2 already, I know that a is pi/2 and b is theta. But in problems number 3,4, and 5 I still don't know whether it is possible or impossible.

A, G and E is in the same line. AD, BD, and DG represent force perpendicular to the hemisphere. I don't know the next.

Now, I don't know how to find that relationship rather than mathematics.

<Moderator's note: User has been warned to show some effort.> 1. Homework Statement Here this is a problem that I get troubled from MEXT scholarship examination. And the problem is Homework Equations F = mg Fx = cosa Fy = sina The Attempt at a Solution Is anyone can help me to solve the...