Find Spring Constant k Using Mass & Time Values

[HELP_786]

how would i go about finding k with given values for mass and time?

i have seen these equations over and over...but i feel like I am missing something very important that i need..please help me

T=2π√(m/k))

F=-kx

 

[rock.freak667]

$$T= 2 \pi \sqrt{\frac{m}{k}}$$

$$\Rightarrow T^2=\frac{4 \pi^2 m}{k}$$

Can you rearrange for k now?

 

[HELP_786]

o I am sorry i meant how would I go about finding T(period) with given values for time and mass...i forgot to proof read

those are the formulas i keep seeing everywhere

for example if i had .10kg and 8.86 seconds for the time to find the period would i do this:

T²=(4π²m)/((4π²m)/(8.86))

and then at the end take the square root

?

 

[rock.freak667]

How exactly was the time measured?

 

[HELP_786]

in seconds

8.86 seconds would be the average time for 10 vibrations in a simple harmonic motion

 

[rock.freak667]

8.86 seconds would be the average time for 10 vibrations in a simple harmonic motion

Period(T) is the time taken for one oscillation/vibration.


10 oscillations/vibrations take 8.86 seconds. How much time would 1 oscillation take?

 

[HELP_786]

OH! so just divide 8.86s by 10 rite??

 

[rock.freak667]

OH! so just divide 8.86s by 10 rite??

That should yield the time period, yes.

 

[HELP_786]

i don't believe i didnt realize that! thanku so much! ...im thinking too much lol

 

[rock.freak667]

i don't believe i didnt realize that! thanku so much! ...im thinking too much lol

You just need to think about what it is you want to find.

 

[HELP_786]

thanx again! =D