lab quiz #7

For number one:
F=m*g
.0396kg* 9.81=.388476
K=F/X
.388476/.26=1.4941
The ans is negative
That is how i got this problem right...

The correct solution to all of the problems is posted up already...

plzzzzzzz help with 3

I have attempted to do question 3 many times but I cant figure it out. If you know how to do it please post a detailed description. Thank you.

Does ANYONE know how to do question 3?

Did anyone do the Preparation for Lab 7?

please help me with #3

k= 2.32N/m
m= 0.356kg (already converted to SI)
errorof spring constant is 8.05%
use formula: T=2pi*sqrt(m/k)
2pi*sqrt(.356/2.32) = 2.46128
absolute error of T= 0.5*(8.05/100)*2.46128 = 0.009907 this is the exact answer found on the practice problems on the CD. Good luck

I initially put neg and got it wrong the answer is positive.

I keep getting all of them wrong

DeltaT = (error%/100) * .5 * T

T=2*pi*sqrrt(m/k)

Answer is positive

Hi,

Does anyone have any ideas for Q2?

These answers were put up in the very first post...

"#2
T= 2pi*sqrt(mass of glider/K)
answer neg"