The spring stretches by 0.8m
Explanation:The force constant, k = 400 N/m
The mass of the object that hangs from the lower end of the spring, m = 32kg
The acceleration due to gravity, g = 10 m/s²
The weight of the object, W = mg
W = 32 x 10
W = 320 N
The force applied to the spring, F = kx
where x is the extension of the spring
F = 400x
The weight of the object = The force applied to the spring
W = F
320 = 400x
Divide both sides by 400
x = 320/400
x = 0.8 m
The spring stretches by 0.8m
