The spring in a seismometer is important because:

  1. it lets the heavy suspended mass stay nearly still while the frame moves
  2. it produces electricity
  3. it measures temperature
  4. it heats the coil
Answer

A) it lets the heavy suspended mass stay nearly still while the frame moves

Inertial reference. SLO P-09-E-43 · Application

Physics MCQ · More Magnetism and Electromagnetic Induction MCQs · Practise