Understanding Hooke's Law

What is Hooke's Law?

• It states that the force needed to extend or compress a spring is proportional to the distance it is stretched.

• It states that the force needed to extend or compress a spring is inversely proportional to the distance it is stretched.

• It states that the force needed to extend or compress a spring is equal to the square of the distance it is stretched.

• It states that the force needed to extend or compress a spring is independent of the distance it is stretched.

Which of the following is a common application of Hooke's Law?

• Calculating the speed of a car.

• Determining the weight of an object.

• Designing a suspension system in vehicles.

• Measuring the temperature of a liquid.

• The force applied.

• The extension or compression distance.

• The spring constant.

• The mass of the object.

What does the graph of Hooke's Law look like when force is plotted against extension?

• A horizontal line.

• A vertical line.

• A straight line passing through the origin.

• A curved line.

• Newtons per metre (N/m).

• Metres per second (m/s).

• Kilograms (kg).

• Joules (J).

Which of the following is NOT an application of Hooke's Law?

• Measuring the force in a spring balance.

• Calculating the pressure of a gas.

• Designing bungee cords.

• Analysing the behaviour of elastic materials.

What happens when the limit of elasticity is exceeded in a material?

• The material returns to its original shape.

• The material becomes permanently deformed.

• The material becomes stronger.

• The material becomes lighter.

If a spring has a spring constant of 50 N/m and is stretched by 0.2 metres, what is the force applied?

• 5 N

• 10 N

• 15 N

• 20 N

Which of the following best describes the limit of elasticity?

• The maximum distance a material can be stretched without breaking.

• The maximum force a material can withstand without permanent deformation.

• The minimum force required to stretch a material.

• The point at which a material becomes weightless.

If a graph of force versus extension for a spring is a straight line, what does this indicate about the spring?

• The spring is not following Hooke's Law.

• The spring is following Hooke's Law.

• The spring is broken.

• The spring is at its limit of elasticity.