Hooke's Law and Elastic Potential Energy

If F is force, k is spring constant and x is extension, what equation links all three?

• F=k/x
• x=Fk
• k=Fx
• F=kx

The 'limit of proportionality' is reached when a material reaches its:

• breakdown
• elastic limit
• end of tether
• fracture stress

A stiff material has a:

• high spring constant
• low spring constant
• spring constant of any value
• spring constant which is difficult to predict

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

• 0.15N/m
• 10N/m
• 6.7N/m
• 15N/m

Which of the following springs is the stiffest (has the largest spring constant)?

• A spring that requires a froce of 2000 N to compress it by 6.8 m.
• A spring that requires a force of 4000 N to stretch it by 9.0 m. 
• A spring that requires a force of 8000 N to compress it by 45 m.  
• A spring that requires a force of 4800 N to stretch it by 14 m.

What Quantity can you calculate from the graph and give the magnitude of that quantity.  

• distance 4.5 m
• Force 15 N
• spring constant 20 N/m
• spring constant 200 N/m

Tags

NGSS.HS-PS2-1

A net force of 430 N acts to stretch an extension spring.  How far will the spring stretch if its spring constant is 700 N/m?

• 43.9
• 0.307 m
• 1.63 m
• 0.614 m

Tags

NGSS.HS-PS3-2

A 5 newton force causes a spring to stretch 0.2 metres. What is the potential energy stored in the stretched spring?

• 1 J
• 0.5 J
• 0.2 J
• 0.1 J

An unstretched spring has a length of 0.10 meters. When the spring is stretched by a force of 16 newtons, its length is increased to 0.18 meters. What is the spring constant of this spring? 

• 0.89 N/cm 
• 2.0 N/cm 
• 1.6 N/cm 
• 1.8 N/cm

Which statement most accurately represents Hooke's Law?

• a) Extension of a spring is proportional to the force applied.
• b) Extension of a spring is proportional to the number of coils.
• c) Extension of a spring is inversely proportional to the force applied.
• d) Thickness of a spring wire is proportional to the force applied.