circular motion and oscillations

Question 1

Answer 1

• a forced oscillationis when they system experiences an external driving force causing it to oscillate.
• in this case the louspeaker is made to vibrate by the force on the magnet on the current in the coil fixed the speaker cone.
• anothee example is the movement of the pendulum of a grandfather clock which is driven by a small motor

answer: B

Question 2

Answer 2

exact wording required
* when the driver (sphere) has a similar frequency to naturtal frequency of tower
* this results in maximum energy transfer

always refer to objects as “driver “ (force)

Question 3

Answer 3

exact wording required:
* spring displacement from the centre is proportional to the resultant force from the springs,
* directed towards the centre

Question 4

Answer 4

• force the mass to oscillate with a periodic force
• when the forcing frequency is equal to the natural frequency of the mass spring system, mass oscillates as maximum amplitude (maximum energy tranfer)