Recent content by helppleaseee

ok i think I'm starting to get it now...thanks

so F=kx 88=k20 so the answer would be 4.4?

Homework Statement A spring with a pointer attached is hanging next to a scale marked in millimeters. Three different weights (weights A, B and C) are hung from the spring, in turn, as shown below. Weight A weighs 111 N and B weighs 199 N. there are three pictures of spring scales with...

ok i got it thanks so much!

i was confused on this same problem but i don't understand where the 1.09 comes from...?

nvm i got it...you just ignore the 9 ropes

then what do i do with the 9 because there are 9 ropes? ...maybe multiply it??

A system of pulleys is used to lift an elevator that weighs 3900 Newtons. The pulley system uses 9 ropes to support the load. How far would 10700 joules of input work lift the elevator? Assume the pulley system is frictionless. Homework Equations w=fd f=ma w=mg The Attempt at a Solution w=fd...

yay! thanks soooo much i got it!

i initially thought it was 1...but that is wrong, then i thought .5 but something tells me that's not right. :frown:

[b]1. picture of problem: http://img.photobucket.com/albums/v223/lilaznbabe/4_56.gif (a) What minimum force F is needed to lift the piano (mass M) using the pulley apparatus shown in Fig. 4-56? (Enter your answers in terms of some multiple of Mg.) ____ Mg (I got .5) (b) Determine the tension...