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MECHANICS 5

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

Angular Velocity
Angular velocity is the of change of angle with respect to .
The unit of angular velocity is the radian per second (rad s-1)

Centripetal Force
If a body is moving in a the force towards the needed to keep it moving is called centripetal force.

Centripetal Acceleration
If a body is moving in a the acceleration towards the of the circle is called centripetal acceleration.

Period of an Orbit
The time taken for a satellite to go around the central body
is called the time or simply the period (T) of the orbit.

Hooke's Law
When an object is bent, or compressed by a s,
the force F is directly proportional to the displacement,
provided the limit is not exceeded.

Simple Harmonic Motion
A body is said to be moving with simple harmonic motion if:
(i) its is directly proportional to its from a fixed point of its path and
(ii) its acceleration is always towards that point.