What is Hooke’s Law?

• Force is inversely proportional to displacement.

• Force is directly proportional to displacement.

• Force is inversely proportional to the square of displacement.

• Force is directly proportional to the square of displacement.

Which equation defines Hooke’s Law?

• F = x

• F = k x

• F = ½ k x

• F = ½ k x²

Which equation defines Elastic Potential Energy?

• U = x

• U = k x

• U = ½ k x

• U = ½ k x²

Which equation defines work done by the spring?

• U₂ – U₁

• U₂ + U₁

• U₁ – U₂

• U₁ + U₂

What force causes the spring and block system to move back and forth?

• Gravitational force

• Friction

• Spring force

• External force

Which equation defines the acceleration of the spring and block system?

• $a=-kx$

• $a=-\frac{kx}{m}$

• $a=kx$

• $a=\frac{kx}{m}$

For a simple harmonic oscillator, which of the following pairs of vector quantities CAN’T both point in the same direction? (The position vector is the displacement from equilibrium.)

• position & velocity

• velocity & acceleration

• position & acceleration

• None of them.

In simple harmonic motion, the maximum displacement is called...

• period

• frequency

• amplitude

• position

In simple harmonic motion, the time to make one complete oscillation is called…

• period

• frequency

• amplitude

• position

At which position is the acceleration of an oscillating object equal to zero?

• A

• B

• C

• D