Recent content by Peach

I'm new to programming and learning the switch statements right now. I'm wondering if you can add/subtract/multiply/divide equations in the switch statements. Example: y = x^6/6 And if I want that in case 1, how do I calculate y assuming I already have x input beforehand?

Bower: Somehow I got the wrong answer from that, maybe I entered it wrong. It's too late and I'm too tired from this problem so that's probably the case. Anyway, thanks for helping, appreciate it much. :)

morbid - I am too, that's why I'm waiting for someone to help us with this problem. So far, I have two eqns. T and g_planet. T = 2(pi)(r^(3/2)) / sqr(Gm_planet) g_planet = (Gm_planet) / (r_p)^2 g_planet = from part A Solving for that, I get the mass of the planet and with that, I plugged it...

Thanks. I have an answer already, but again, not sure if it's correct. I don't know about anyone else, but I've spent more than 6 hours on this problem already so I'm very interested. :x

Well, when you solve part B, can you give me a hint? I have an idea about it, but since I only have one try left, I don't want to get it wrong. :x

Have you drawn a diagram yet? If you did, then you can see what theta is. The equator is around half of the sphere and the north pole is at the top. Radius is from the center to the top so... No, because you're not on earth. You're on planet X. Remember that mass stays the same, no matter...

Yeah, you have to convert L to the radius, because L is not the radius, it's only the distance from the north pole to the equator. :) GM_e? M_e is the mass of the earth...which doesn't apply here because you're not calculating the mass of earth. Look up apparent weight in the text guys...

For the satellite or the planet..?

Thanks for helping. I found that already, but I'm stuck on finding the satellite at height h above planet X. I can't use v = (GM/R)^(1/2) because I don't have the mass of the planet and I'm not sure about using omega = v/r because the answer didn't make sense. The angular velocity must be the...

Homework Statement Planet X rotates in the same manner as the earth, around an axis through its north and south poles, and is perfectly spherical. An astronaut who weighs w on the Earth weighs w_1 at the north pole of Planet X and only w_2 at its equator. The distance from the north pole to...

Thanks for all your help, really appreciate it. I got it now (cleared the torque confusion too). Phew.

Ah erm, so here I go again. Horizontal force - The perpendicular distance of F to the pivot line, is it (R - h)? So then that would make the torque = F(R - h)? I'm not sure about theta because it's not given in the problem. Unless there's some other logic that I'm missing again. Gravity -...

The normal force should be zero because there's nothing pushing up anymore. For the torques, this is what I have so far: Gravity - I'm confused. I'm thinking it should be mgR, because R is the distance from the gravity force (which should be at the center of mass right?) to the pivot point...

Thanks for the help. I'm stuck on the forces. So far, I've identified gravity force, normal force from the ground, the force the curb is exerting on the wheel and the horizontal force. This is all right? But normal force and gravity force shouldn't affect the motion because they're in the y...

Homework Statement You are trying to raise a bicycle wheel of mass m and radius R up over a curb of height h. To do this, you apply a horizontal force F. What is the least magnitude of the force F_vec that will succeed in raising the wheel onto the curb when the force is applied at the center...