A block having mass 90 kg.just contact the top of the free end of spring.
(1) find the maximum deflection of spring if the block is released instantaneously with zero initial velocity.
(2) if the block is very gradually lowered on the spring.
The stiffness of spring is 5000 N/m
Wb = m*g = 90kg * 9.8N/kg = 882 N. =
Wt of block.
a. Deflection=882/5000 * 1m = 0.1764 m.
b. Same as a.