A5 kg brick is dropped from a height of 12m on a spring with a spring constant 8 kn/m. if the spring has unstretched length of 0.5m, find: a) the shortest length the spring will be compressed before recoil, and
b) the final length of the spring once the whole system become static.

0.1164 m

0.49387 m

Explanation:

m = Mass = 5 kg

g = Acceleration due to gravity = 9.81 m/s²

h = Height from which brick falls = 12 m

k = Spring constant = 8 kN/m

a) Potential energy of the brick

Potential energy in spring

The compression of spring = 0.5-0.3836 = 0.1164 m

b) Weight of the brick

The final length of the spring = 0.5-0.00613 = 0.49387 m

your answer is yx

hope this

~mia

v 154.9= 0.9 length length s little over 154.9cm