Answer:
Explanation:
For spring system
Force applied
F = - kx
Where k is the spring constant and x is stretching length of spring. The negative sign indicates that force applied to strech a spring produces a negative acceleration in spring which give rise to restoring force.
Now
In first step
F= 10N
x= 4 cm= 0.04 m
Since k is a constant thus
k= F/x = 10/0.04= 250 N/m
Which will be the spring constant of the spring.
In second step 15 N force is applied to the same string.
Thus, the streching length can be calculated as
x= F / k = 15 N / 250 N/m= 0.06 m = 6 cm
