1. Jul 30, 2008

### 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 im missing something very important that i need..please help me

T=2π√(m/k))

F=-kx

2. Jul 30, 2008

### rock.freak667

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

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

Can you rearrange for k now?

Last edited: Jul 30, 2008
3. Jul 30, 2008

### HELP_786

o im 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

???

4. Jul 30, 2008

### rock.freak667

How exactly was the time measured?

5. Jul 30, 2008

### HELP_786

in seconds

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

6. Jul 30, 2008

### rock.freak667

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

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

7. Jul 30, 2008

### HELP_786

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

8. Jul 30, 2008

### rock.freak667

That should yield the time period, yes.

9. Jul 30, 2008

### HELP_786

i dont believe i didnt realize that! thanku so much! ....im thinking too much lol

10. Jul 30, 2008

### rock.freak667

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

11. Jul 30, 2008

### HELP_786

thanx again! =D