5470: Hooke's Law & Springs

At point P, _______.

• the force applied to the spring is equal to its elongation

• Hooke's Law ceases to be valid

• the spring is can be stretched but still springs back into shape reversibly

• the spring constant increases

How is this graph used to find the spring constant?

• area under the curve

• read the y-axis

• read the x-axis

• slope

Which quantity can be determined from this graph?

• the net force is 4N

• the spring is 0.4m long

• the stored potential energy in this spring is 1.6 J

• the spring constant is 10 N/m

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

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

Tags

NGSS.HS-PS3-3

When the string is cut, the spring will

• convert kinetic energy to spring potential energy

• convert chemical potential energy to kinetic energy

• convert spring potential energy to kinetic energy

• depends on whether there are inclined planes nearby

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-3

As the person pulls the block from O to B, the spring potential energy of the system

• increases

• decreases

• remains the same

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

Why are points B and C equidistant around the equilibrium length of the spring?

• because there is more kinetic energy at the equilibrium position

• because there is the same amount of spring potential energy at B as C

• because the spring has a positive spring constant when stretched and negative when compressed

• because the block has maximum kinetic energy at point B and C

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-1

NGSS.HS-PS3-2

At what point is the kinetic energy of the system maximized?

• B

• O

• C

• before the hand did work

Tags

NGSS.HS-PS2-1

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 roughly constant

• needs more information