Hooke's Law and Elastic Potential Energy

What is the best description of the relationship shown in this graph?

• In this graph, the relationship between force and extension is linear.

• In this graph, the relationship between force and extension is non-linear.

• In this graph, the relationship between force and extension is directly proportional.

• In this graph, there is no relationship between force and extension.

If a spring is extended beyonds it elastic limit, what two things does this mean for the spring?

• The spring will no longer return to its original length.

• The spring will no longer obey Hookes Law.

• The spring will no longer extend.

• The spring will bounce back to its original length.

Which out of springs K, L or M from the graph have the highest spring constant.

• K

• L

• M

The data in the graph represents the extension of a spring. Calculate the spring constant using the equation:

Spring constant = Force ÷ Extension ( k = F / x).

• k = 2.5 N/m

• k = 0.4 N/m

• k = 7 N/m

• k = 5 N/m

When comparing spring A to B,

• A has a larger spring constant than B so A is a stiffer spring

• B has a larger spring constant than A so A is a stiffer spring

• A has a larger spring constant than B so B is a stiffer spring

• B has a larger spring constant than A so B is a stiffer spring

As the hand pulls down on the mass, the spring constant _______, assuming that it doesn't pass the elastic limit of the spring.

• increases

• decreases

• remains constant

• needs more information

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

• F = k / x

• x = F . k

• k = F . x

• F = k . x

A graph of extension against force for an elastic material is:

• A downward curve

• An upward curve

• A straight line from any point on the x and y axis

• A straight line from the origin

A stiff spring 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?

• k = 0.15 N/m

• k = 10 N/m

• k = 6.7 N/m

• k = 15 N/m

Tags

NGSS.HS-PS2-1