A seismometer is a transducer used to detect earthquakes. It uses the motion
of the ground, Vg(t), as an input to the system and uses seismic mass is suspended
from the case, which has mass mc. A magnet is attached to the bottom of the seismic
mass to yield a total moving mass of m. Motion of the ground causes relative motion
between the magnet and the coil.A seismometer is a transducer used to detect earthquakes. It uses the motion
of the ground, Vg(t), as an input to the system and uses seismic mass is suspended
from the case, which has mass mc. A magnet is attached to the bottom of the seismic
mass to yield a total moving mass of m. Motion of the ground causes relative motion
between the magnet and the coil.