Recent content by Mac13

thanks...its a little too late to turn it in for my homework because it was due early this morning but at least i understand it now:)

I've been staring at this problem for a loonnng time and i just can't figure it out:(.. i would appreciate it if someone could help me...thx! :) A large block with mass 26 kg executes horizontal simple harmonic motion as it slides across a frictionless surface with a frequency 1:9 Hz ...

hoop and disk rolling(help please) ok I've been looking at this forever and can't get it...dont know what to do..i would appreciate it if someone could help -------------------------------------------------------------------------- A uniform solid disk and a uniform hoop are placed side...

i followed that..its down at bottom

alright.. 1/2mv1^2 + 1/2(2.88m)v2^2 = 65.4867 v1 = 10.9228 - 2.88v2 plugging v1 into that first equation i got 1/2m(10.9228-2.88v2)^2 + 1.44v2^2 = 65.4867 1/2m(8.2944v2^2-62.9153+119.3075)+1.44v2^2 = 65.4867 right here i multiplied both sides by 2 to get the 1/2 out but i didnt know...

i went with the 6.6 one and the dang site said its wrong:/...ohhh..would it be negative then?..hehe

after using the quadratic equation i got V2 = 6.6435 and -0.1803 but the 6.6 one didnt work and i didnt think it was the negative one

ya i remembered those formulas just didnt know what to do with those..thought it was something more complex..and what's the a and b subscripts?

i don't know what to do with the m's when i put v1 into the energy equation...

i dotn know what formulas to use...when u said that i went and looked under the review for the chapter and found a formula for an elastic collision final v2= ((2m1*V1i)/m1+m2) + ((m2-m1)*v2i)/m1+m2) where m1 is mass 1...m2 is mass 2...i = initial ..i calculated this and the dumb website...

completely lost:(.. please help Ok I have been looking at this problem and i really don't know where to start. I've done all the other homework in my section but cannot get this. I would appreciate it if someone would help me:). Here it is. Two particles, of masses m and 2.88m are moving...

whats up with not being able to read james thread..its all black

cool thanks :)