 µ IB | S.H.M.

10 quick questions

10 minutes maximum! (can you do it in 5?)

1. Simple Harmonic Motion (SHM) is defined as an oscillation where ..

• A. acceleration is proportional to the displacement from the centre.
• B. acceleration is proportional to the speed of the oscillation.
• C. acceleration is proportional to the velocity of the oscillation.
• D. acceleration is proportional to the mass of the system.

2. The acceleration of the system is always..

• A. directed to the left.
• B. directed to the right.
• C. in the opposite direction to the displacement from the centre.
• D. in the same direction to the displacement from the centre.

3. SHM can be modelled by a ball rolling backwards and forwards in a bowl. Which of these 4 shaped bowls would best model SHM in this simulation? 4 - 8. The graph below shows how the displacement of a pendulum mass varies with time. The following 4 graphs are to used for questions 4 and 5: Which of the graphs above shows....

4. .. the variation of the velocity of the mass with time.

5. .. the variation of the acceleration of the mass with time.

6. Which of the graphs below shows how the acceleration of the mass varies with the displacement, x? 7. Which of the following best describes the velocity and the acceleration at the centre of the oscillation?

 velocity Acceleration A zero zero B zero maximum C maximum zero D maximum maximum

8. Which of the following best describes the velocity and the acceleration at the maximum displacement?

 velocity Acceleration A zero zero B zero maximum C maximum zero D maximum maximum

9. SHM is present in many osciilating systems. Which of the following is NOT an 'SHM oscillation'?

• A. A mass bouncing up and down on a spring
• B. A column of water oscillating in a U shaped tube.
• C. The end of a ruler vibrating backwards and forwards.
• D. A ball bouncing up and down on the floor.

10. A large pendulum swings from the left to the right in 2 seconds. The frequency of the pendulum is:

• A. 0.25 Hz
• B. 0.5 Hz.
• C. 2 Hz
• D. 4 Hz