1. As the large wheel in the diagram rotates the hanging ball is made to move up and down.
   If the diameter of the large wheel is 6cm the amplitude of the small ball will be

   A.  12 cm
   B.  6 cm
   C.  3 cm
   D.  1.2 cm

    

    

    

    

    

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   3. 
   Explanation:
   
   
2. For the pendulum shown in the animation the Tension in the string is greatest at

    

    

    

    

    

    

    

    

    

    

    

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   3. 
   Explanation: The ball has max velocity at C. If you think of the ball moving in a part of a circle then the centripetal force is greatest when the ball is traveling fastest.
   
   
3. The time taken for a pedulum to complete 20 swings is 30 seconds.
   The frequency of the pendulum is

   A.  0.3 Hz
   B.  0.7 Hz
   C.  1.5 Hz
   D.  3.0 Hz [Show][Hide]

   2. 
   Explanation: time for 1 swing = 30/20
   frequecncy = 1/time for 1 swing = 20/30
   
   
4. When the ball in the animation reaches point A its

   A.  acceleration is maximum but velocity is minimum.
   B.  acceleration is zero but velocity maximum.
   C.  displacement is zero and velocity zero.
   D.  displacement maximum and velocity maximum

    

    

    

    

    

    

    

    

    

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   2. 
   Explanation: When the ball is at the equilibrium position the forces are balanced so acceleration is zero.
   
   
5. For the oscillation shown, when the pendulum is at point A

   A.  the acceleration is to the left.
   B.  the acceleration is to the right.
   C.  the direction of acceleration depends on the direction of movement.
   D.  the acceleration is zero.
    

    

    

    

    

    

    

    

    

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   1. 
   Explanation: When the ball is displaced there will be a restoring force towards the centre, the acceleration is in the same direction as the force.
   
   
6. For the two pendula shown; compared to the blue one, the red one has

   A.  the largest time period but smallest amplitude.
   B.  the highest frequency but smallest amplitude.
   C.  the highest frequency and biggest amplitude.
   D.  the shortest time period and smallest amplitude
    

    

    

    

    

    

    

    

    

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   3. 
   Explanation:
   
   
7. Given that the scale in the animation is a cm scale the amplitude of the oscillation in 1 is

   A.  1 cm
   B.  2 cm
   C.  4 cm
   D.  5.5 cm [Show][Hide]

   2. 
   Explanation: Amplitude is the distance from the centre to the position of maximum displacement
   
   
8. 

   For the oscillation shown the angular frequency is

   A.  0.5π s^-1
   B.  π s^-1
   C.  2π s^-1
   D.  4π s^-1

    

    

    

    

    

    

    

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   2. 
   Explanation: The time period is 2s so the frequency is 0.5 Hz
   Angular frequency is 2πf
   
   
9. The frequency for the oscillation of question 1 is

   A.  0.2 Hz
   B.  0.5 Hz
   C.  5 Hz
   D.  10 Hz [Show][Hide]

   1. 
   Explanation: Frequency = 1/T = 1/5
   
   
10. A pendulum swings as shown.

    The time period of the motion is

    A.  1 s
    B.  2 s
    C.  5 s
    D.  10 s

     

     

     

     

     

     

     

     

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    3. 
    Explanation: Time taken for one complete there and back swing.
    
    

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