Simple Harmonic Motion: Crash Course Physics #16

What caused the Millennium Bridge to sway noticeably when people walked on it?

• The bridge was too narrow for the number of pedestrians.

• The force of the pedestrians' footsteps.

• Strong winds pushing against the bridge.

• A design flaw that made the bridge too rigid.

Which of the following best describes simple harmonic motion?

• Motion that only occurs in a vacuum.

• Movement that is always in a straight line.

• Oscillations that follow a consistent pattern.

• Motion that continuously increases in speed.

When a ball attached to a spring reaches its turning points during simple harmonic motion, what is true about its kinetic energy?

• It is at its maximum.

• It is at its minimum (zero).

• It is equal to its potential energy.

• It is constantly changing but never zero.

How does observing uniform circular motion from the side relate to simple harmonic motion?

• It appears as a straight line, but the speed is constant.

• It appears as simple harmonic motion, with the radius of the circle being the amplitude.

• It appears as simple harmonic motion, but the marble's speed is always zero at the ends.

• It appears as a random, unpredictable motion.

What is the formula for the period (T) of a mass (m) oscillating on a spring with a spring constant (k)?

• T = 2π√(k/m)

• T = 2π√(m/k)

• T = (1/2π)√(m/k)

• T = (1/2π)√(k/m)

How is frequency (f) related to the period (T) of an oscillation?

• f = T

• f = 1/T

• f = 2πT

• f = T/2π

What shape does the graph of an object's position versus time take for an object in simple harmonic motion?

• A straight line

• A parabola

• A wave

• A circle

What phenomenon occurs when a force is applied at the right frequency, causing an oscillation's amplitude to increase?

• Damping

• Interference

• Resonance

• Refraction