oscillatory motion

in the opposite figure a simple pendulum is pulled from the rest position o to the position x where its maximum displacement is 5 cm then it's left to move a simple harmonic motion to complete one oscillation in time T. which of the following graphs represents the relation between the displacement of the pendulum from its rest position and a time during a complete oscillation

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the opposite figure shows a load that is attached to a vibrating spring, so the amplitude of the vibration equals

• 1.5 cm

• 3 cm

• 4.5 cm

• 6 cm

The opposite figure shows the motion of a simple pendulum from x to o, if the distance LM, MN and NO are equal then the time intervals of these distances are

• `LM = MN = NO

• LM > MN > NO

• LM < MN < NO

• LM = MO

 $\frac{T_1}{T_2}$ Two bodies are vibrating, the first body makes 90 complete vibrations in 2 minutes and the second one makes 3 complete vibrations in one second. so the ratio between their periodic times T1/T2

• 2/3

• 3/2

• 1/4

• 4/1

The opposite figure shows a vibrating string to move from point A to point B is 0.05s, then the frequency of the string =

• 2 Hz

• 5 Hz

• 10 Hz

• 20 Hz