Monday

December 22, 2014

December 22, 2014

Posted by **Hannah** on Sunday, June 10, 2012 at 3:46pm.

I know that the formula is F=-kx

but i am not sure what to plug in since there are two sets of numbers plus the mass.

- Physics(Please respond) -
**Elena**, Sunday, June 10, 2012 at 5:15pmx1=A•sin(ω•t1),

sin(ω•t1)=x1/A,

cos(ω•t1)=sqrt(1-sin²(ω•t1)=

=sqrt (1-(x1/A)²),

v1=A•ω•cos(ω•t1)=

=A •ω•sqrt (1-(x1/A)²).

(v1/A•ω)²= 1-(x1/A)²,

v1²/ω² =A² - x1²,

A² = x1² + v1²/ω²,

Similar to this

A² = x2² + v2²/ω²,

Therefore,

x1² + v1²/ω²= x2² + v2²/ω²,

x1² •ω² + v1²= x2²• ω² + v2²,

v1²- v2² = (x2²-x1² ) •ω²

ω² = (v1²- v2²)/( x2²-x1²),

ω² =k/m,

k =m•(v1²- v2²)/( x2²-x1²)=

0.33•(28.09—17.64)/(6.76-1.44) •10^-2=

= 0.33•10.45•100/5.32=64.82 N/m.

- Physics(Please respond) -
**Hannah**, Sunday, June 10, 2012 at 6:09pmthank you!

**Answer this Question**

**Related Questions**

PLEASE HELP!! PHYSICS - A 0.63-kg metal sphere oscillates at the end of a ...

physics - A 0.67-kg metal sphere oscillates at the end of a vertical spring. As ...

physics - A 0.67-kg metal sphere oscillates at the end of a vertical spring. As ...

Physics - A 0.56-kg metal sphere oscillates at the end of a vertical spring. As ...

physics - An unstrained horizontal spring has a length of 0.33 m and a spring ...

physics - In a room that is 2.13 m high, a spring (unstrained length = 0.30 m) ...

phyics - An object on a vertical spring oscillates up and down in simple ...

phyics - An object on a vertical spring oscillates up and down in simple ...

Physics - In a room that is 2.69 m high, a spring (unstrained length = 0.28 m) ...

physics - In a room that is 2.78 m high, a spring (unstrained length = 0.30 m) ...