1.2. Basic Terminologies and Concepts

Try these first

1. 1.

   What is the definition of vibration?

   Hint

   Think about how a swing moves.

2. 2.

   Name two types of vibration.

   Hint

   Consider how a pendulum swings.

3. 3.

   What defines free vibration?

   • A) It occurs only with external force.
   • B) It occurs without external force after a disturbance.
   • C) It is oscillation that stops immediately.

   Hint

   Remember how a swing moves before stopping.

4. 4.

   A system that requires only one coordinate to describe its motion is called what?

   • A) MDOF
   • B) SDOF
   • C) Continuous System

   Hint

   Think of a simple pendulum.

5. 5.

   A mass is attached to a spring that is disturbed slightly. Explain the motion of the mass and classify it.

   Hint

   Consider what happens to a pendulum when initially pushed.

6. 6.

   Describe how increasing damping in a system might affect its natural frequency and amplitude of vibration.

   Hint

   Think about how car shocks reduce bouncing.