Hooke's Law

If F is force, k is spring constant and x is extension, Hooke's Law tells us that:

• F=k/x

• x=Fk

• k=Fx

• F=kx

Which statement most accurately represents Hooke's Law?

• Extension of a spring is proportional to the force applied.

• Extension of a spring is proportional to the number of coils.

• Extension of a spring is inversely proportional to the force applied.

• Thickness of a spring wire is proportional to the force applied.

Hooke's Law fails when a material reaches its:

• breakdown

• elastic limit

• limit of proportionality

• fracture stress

A spring has a spring constant of 5N/cm.  What is its extension when loaded with 15N?

• 4cm

• 5cm

• 3m

• 3cm

Tags

NGSS.MS-PS2-2

According to Hooke's Law, what is the relationship between force and extension in a spring?

• Force is inversely proportional to extension

• Force is directly proportional to extension

• Force is equal to extension squared

• Force is independent of extension

If a spring has a spring constant of 200 N/m and is stretched by 0.5 metres, what is the force applied?

• 100 N

• 200 N

• 50 N

• 400 N

If a spring is compressed by 0.2 metres and has a spring constant of 300 N/m, what is the elastic potential energy stored in the spring?

• 6 J

• 12 J

• 3 J

• 30 J

Tags

NGSS.HS-PS3-1

• spring constant

• coulomb's constant

• kinetic energy

• potential energy constant

Tags

NGSS.HS-PS3-2

A spring extends 1.5m under load 10N. What is its spring constant?

• 0.15N/m

• 10N/m

• 6.7N/m

• 15N/m

A 25,000 N Car is supported by 4 springs. If each spring is deflected by 0.040 m what is the spring constant? (Think about how much weight each spring holds up!)

• 160,000 N /m

• 620,000 N/m

• 630,000 N/m

• 120,000 N/m

Tags

NGSS.HS-PS2-1