2-10. The
ball is shot from a
spring device. If the ball is shot to the maximum distance of 
up the smooth plane
after the spring is pushed back 
and the ball is released from rest. The four cords C and plate P keep the spring compressed 
when no load is on the
plate. Determine the distribution of
stiffness k.
Solution
Thus
Ans.
Ans.
Therefore, the stiffness 
.