Question

In simple harmonic motion, when the speed is maximal, which other quantity has a magnitude greater than zero?

a.) force towards equilibrium

b.) total energy of system

c.) potential energy of system

d.) displacement from equilibrium

e.) acceleration toward equilibrium

-Two pure tones are sound together and a beat frequency of 3 Hz is heard. The frequency of one of the tones is increased by 1.5 Hz. What happens to the beat frequency?

a.) decreases by 1.5Hz

b.) increases by 1.5Hz

c.) stays the same

d.) beat disappears

e.) cannot tell

Answer 1

1) b) total energy of system

Note- total energy in simple harmonic motion always remains constant and greater than zero.

2)e) cannot tell.

Note- it could either increase or decrease by 1.5hz .