Hooke's Law

What physical phenomenon does Hooke's Law primarily describe?

• The relationship between mass and acceleration.

• The behavior of light waves.

• The force required to extend or compress a spring.

• The conservation of energy in a closed system.

How is the force applied to a spring related to its extension, assuming it acts elastically?

• Force is inversely proportional to extension.

• Force is proportional to the square of the extension.

• Force is directly proportional to extension.

• Force is unrelated to extension.

What are the standard SI units for the spring constant (k)?

• Joules per meter (J/m)

• Newtons per meter (N/m)

• Kilograms per second (kg/s)

• Meters per Newton (m/N)

Are you enjoying the video lesson?

• Yes

• No

How can the elastic potential energy stored in a spring be determined from a Force-Extension graph?

• By calculating the gradient of the graph.

• By finding the area under the graph.

• By multiplying the maximum force by the maximum extension.

• By dividing the maximum force by the maximum extension.

If two identical springs, each with a spring constant 'k', are connected in series, what is the overall spring constant of the combined system?

• 2k

• k/2

• k

• k²