A mass 620 grams is attached to a string The mass is then di

A mass 620 grams is attached to a string. The mass is then displaced 4.00 cm from its equilibrium position and released. Its speed as it passes the equilibrium position is 24.0 cm/s. What is the value of the spring constant?

Solution

Speed

V_max=AW

=>W=V_max/A =24/4 =6 rad/s

Since W=sqrt[K/m]

Spring constant is

K=W²m =6²*0.62

K=22.32 N/m