Phasors and SHM

In which direction does a displacement phasor rotate in its reference circle?

• clockwise

• Southeast

• Into the screen

• anti-clockwise

What aspect of a displacement phasor gives the angular frequency of the corresponding SHM?

• Its direction

• Its rotational speed

• Its overall length

• Its centre of mass

A pineapple is experiencing SHM, vertically. Which part of its displacement phasor will give its actual displacement from equilibrium?

• its angular frequency

• its acceleration

• its vertical component

• its horizontal component

A mass is oscillating horizontally on a spring in SHM. The diagram shows its reference circle. What aspect of its displacement phasor gives the linear displacement of the mass?

• Its angular frequency

• its vertical component

• its overall length

• its horizontal component

If an object is in oscillatory motion, what must be true if it's in simple harmonic motion? 

• Its motion is along the path of a circle
• acceleration is proportional to the displacement
• Its potential energy is equal to the kinetic energy
• It's attached to a spring

The period of a pendulum may be decreased by

• Increasing the mass of the bob
• moving the equilibrium point
• decreasing the mass of the bob
• shortening the length of pendulum

Which of the following statement is true about SHM?

• The maximum acceleration occurs when the velocity is maximum
• The maximum acceleration occurs when its velocity is zero
• If the velocity is zero so is the displacement
• The instantaneous velocity of the mass is never zero

Where is the ball's zero displacement position?

• A

• B

• C

At which point is the ball's velocity at MAXIMUM?

• A

• B

• C

At which point(s) is the ball's velocity zero?

• A

• B

• C

• D