Physics 6.1.1-2 Circular Motion and Simple Harmonic Motion

11 flashcards · Physics · by TheoTyson

1. What is angular speed?

   The angle an object rotates through per second.

2. What is the symbol for angular speed?

   ω\omegaω

3. Where is the centripetal acceleration directed?

   Centripetal acceleration is directed towards the centre of the circle.

4. What happens to the velocity and acceleration of an object travelling in a circle?

   The velocity and acceleration are always changing.

5. Where is the centripetal force act?

   The centripetal force always acts towards the centre of the circle.

6. What are the conditions for simple harmonic motion?

   Acceleration is proportional to the displacement from the equilibrium. Acceleration is in the opposite direction to the displacement. a∝−xa \propto -xa∝−x

7. Where does the restoring force act in simple harmonic motion?

   The restoring force acts by pulling or pushing the object back to the midpoint.

8. What is the restoring force proportional to?

   The restoring force is proportional to the acceleration.

9. What is the energy-displacement\text{energy-displacement}energy-displacement graph for simple harmonic motion?

10. What are the displacement-time\text{displacement-time}displacement-time , velocity-time\text{velocity-time}velocity-time , and acceleration-time\text{acceleration-time}acceleration-time graphs for simple harmonic motion?

11. What is the relationship between simple harmonic motion graphs?

    The velocity is the gradient of displacement, and accelerations the gradient of velocity.