Hooke's Law and Elastic Potential Energy

What equation is used to calculate elastic potential energy?

• E_{p = m g h}

• E_{p = 1/2 k x}²

• E_{p = F / E d}

What equation is used to calculate the elastic force used in changing the objects length?

• F = mg

• F = k x

• F = EQ

• F = PA

The spring constant of an object tells you?

• What type of spring you are dealing with

• How long the spring will stretch or compress

• It gives you a value on how easy or hard it is to change the objects length.

• A spring constant gives you a number which tells you what material the spring is made of.

Tags

NGSS.HS-PS2-1

Calculate the force that changes the spring length by 0.25m, when the spring's spring constant is 350Nm^-1.

• 1400 N

• 14000 N

• 7.14 x 10^-4 N

• 87.5 N

A force of 157 N acts on a spring with a spring constant of 350 Nm^-1. Calculate the length the spring changed.

• 540 m

• 45 m

• 54950 m

• 0.45 m

A force 480 N of that changes the spring length by 0.25 m, calculate the spring constant.

• 120 N

• 1920 N

• 2000 N

• 20 N

Leo (70 Kg) stretches the trampoline mat by 37 cm. Calculate the elastic potential energy he puts into the trampoline mat.

• 4.79 J

• 126.9 J

• 47.9 J

• 12.76. J

Tags

NGSS.HS-PS3-1

A mass of 0.64 kg extends a spring by 0.42 m. Calculate the spring constant.

• 14.93 Nm^-1

• 0.27 Nm^-1

• 1.52 Nm^-1

• 2.7 Nm^-1

A mass of 0.65 kg extends a spring by 12 cm. Calculate the spring constant.

• 53.08 Nm^-1

• 0.054 Nm^-1

• 0.53 Nm^-1

• 7.8 Nm^-1

Tags

NGSS.HS-PS2-1

Calculate the elastic potential energy Leo puts into the trampoline mat when he stretches the mat (k= 473 Nm^-1) by 0.35 m.

• 2.887 J

• 28.97 J

• 82.775 J

• 12.76. J

Tags

NGSS.HS-PS3-1