A vertical spring with force constant `k` is fixed on a table. A ball of mass `m` at a height `h` above the free upper end of the spring falls vertically on the spring , so that the spring is compressed by a distance `d`. The net work done in the process is

Options

A. ` m h(h-d) + 1/2 Kd^(2)`
B. `m g(h + d) + 1/2 Kd^(2)`
C. `m g(h + d) - 1/2 Kd^(2)`
D. `m g(h -d ) - 1/2 Kd^(2)`

Answer

`(2)`

Explanation

`mg (h + d) + 1/2 Kd^(2)`