Understanding Hooke's Law and Elasticity

What is Hooke's Law?

• Hooke's Law describes the relationship between temperature and pressure.

• Hooke's Law applies only to elastic materials under extreme stress.

• Hooke's Law states that energy is conserved in a spring system.

• Hooke's Law describes the linear relationship between the force exerted on a spring and its displacement.

How do you calculate the spring constant?

• k = v / t

• k = m / a

• k = P / A

• k = F / x

What is meant by the limit of proportionality?

• The limit of proportionality is the maximum point where stress and strain remain directly proportional.

• The limit of proportionality is the point at which materials begin to exhibit plastic behavior.

• The limit of proportionality refers to the maximum stress a material can withstand without any deformation.

• The limit of proportionality is the point where stress and strain are inversely proportional.

Give an example of an application of Hooke's Law.

• A rubber band being stretched.

• Weighing scales that use a spring to measure weight.

• A car accelerating on a road.

• A pendulum swinging back and forth.

What factors affect the elasticity of a material?

• Factors affecting the elasticity of a material include temperature, material composition, strain rate, and impurities.

• Color of the material

• Size of the material

• Cost of production

State the formula for Hooke's Law.

• F = kx + c

• F = -kx

• F = kx

• F = -kx^2

What happens to a spring when it exceeds its limit of proportionality?

• The spring will continue to function normally.

• The spring may become permanently deformed or damaged.

• The spring will become more elastic.

• The spring will instantly break into pieces.

How does temperature affect the elasticity of materials?

• Temperature has no effect on elasticity.

• Higher temperatures make materials more rigid.

• Cooling materials increases their flexibility.

• Temperature increases elasticity in materials, while decreases make them more brittle.

Describe a real-world scenario where Hooke's Law is applied.

• A balloon expanding when heated.

• A weight hanging from a spring scale.

• A person pushing a heavy box across the floor.

• A car accelerating on a flat road.

What is the relationship between force and extension in a spring within its elastic limit?

• The force decreases as the extension increases.

• The force is independent of the extension.

• The force is directly proportional to the extension within the elastic limit.

• The force is inversely proportional to the extension.