Hooke's Law

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.

Tags

NGSS.HS-PS2-1

In which side of the graph does the spring obey Hooke's law?

• To the left of point A

• To the right of point A

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

• K

• L

• M

Tags

NGSS.HS-PS2-1

Which out of springs K, L or M from the graph have the lowest 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

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

• the resultant force (F), 4N

• the original size of the spring (l), 0.4m

• the elastic potential energy (E.P.E), 1.6 J

• the spring constant (k), 10 N/m

Tags

NGSS.HS-PS2-1

How is this graph used to find the spring constant?

• calculate the area under the curve

• read the y-axis

• read the x-axis

• calculate the gradient

Tags

NGSS.HS-PS2-1

When comparing spring A to B,

• both experience the same maximum force

• both experience the same elongation

• both store the same amount of elastic potential energy

• both have identical spring constants

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

What happens when the stretching force on an elastic material is released?

• The material breaks.

• The material remains stretched out.

• It does nothing.

• The material snaps back to its original shape.