Recent content by Physics_girl1

yes i think you should go see a doctor it could be serious http://www.embarrassingproblems.co.uk/shakyhands.htm this website has a few possible solutions to it, but also check out parkinson's disease

could someone please check my answers?

my coefficient of friction for this problem=.652

Homework Statement a) if a force of 86N parallel to the surface of a 20 degree incline plane will push a 120N block up the plane at constant speed, what force parallel to the plane will push it down at constant speed? Homework Equations \SigmaF(X)=F(A)-F(fr)-mgcos\vartheta=0...

ok thanks a bunch i understand it so much better now

so you would subtract the kinetic fricton from the force of the slope?

oh, ok thanks for your help.and letter b is just asking how many Newtons are required to have to push the safe, right?

could you explain please? i have the right numbers but for the wrong forces

okay i see my mistake now, sorry the skids are 4m my new answers are theta as 30, force as 1732.05, normal force as 1000N and kinetic friction as 300 is it correct now?

i keep getting the same thing. when i take the inverse sine of 2/5 i get 23.58 and when i take the inverse cosine of (root 23)/5 i still get 23.58 and that's the angle of elevation from the skids and the ground

ok so i got theta as 23.59, force as 1833.03, normal force as 800N, and sliding friction as 240. does it look correct?

thanks i'll check out the site and then later post my answer

ok i spoke to soon. so what i should do is add the components of force together? I'm sorry I'm askin so many questions we just started Newton's laws and friction/inclines this week and i think the test is next week

ok thanks i will try that!:smile:

i know that f=\mu*normal force and that the normal force is equal to mg, which is 2000N so kinetic force is 600N but i really don't understand the problem all that well