Recent content by kivine

thanks guys. so from above; i assume it will be correct if i absolute the charges in the first equation and for the 2nd eqn to remain unchanged? I got a positive ans for the first eqn and a -ve for the 2nd eqn. so what does it means? I dun quite understand this part, base on the...

Homework Statement http://img682.imageshack.us/img682/985/physicscharge.png Homework Equations The Attempt at a Solution http://img682.imageshack.us/img682/4295/eqn.png Is it the first one or the 2nd one? Is my basic concept right in the first place?

thanks a lot for the help :)

usually the head of the force joins the tail of the vector r

ok. The statements are found in the wiki and almost any related trusses website. There's no work after the questions because the questions are in fact questions that came from me and no one else. And also because they are simply direct questions and if you needed *workings* they can be found...

I guess you misunderstood me. These are some additional queries I've pondered on while doing this question, in which I do have the solution for. You can see for yourself that I made a poor-ish attempt to illustrate the additional questions I've in the bottom right of the figure. If you want, I...

Homework Statement http://img43.imageshack.us/img43/4355/97240590.png Homework Equations * If only two members meet in an unloaded joint, both are zero-force members. * If three members meet in an unloaded joint of which two are in a direct line with one another, then the third...

thanks a lot. .:blushing:

Homework Statement Example 1 http://img143.imageshack.us/img143/6944/86439707.png Example 2 http://img266.imageshack.us/img266/2154/ay2.png Homework Equations Non. The Attempt at a Solution For a smooth pin, there are 2 unknowns. Fx and Fy Why does Ay (Fy) act in the -ve(down) direction...