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Using Hooke's Law Equation, k = F / displacement,

k = 720N / 0.15m

k = 4800N/m

When a 60kg mass is hung on it,

F = ma = 60kg x 9.98m/s^2

F = 598.8N

Again, using Hooke's,

displacement = F / k

displacement = 598.8N / 4800N/m

displacement = .12475m

displacement = 12.475cm

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11y ago
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13y ago

Step 1

Write out the information you already know:

Fapp= 60 N [right] (or whichever direction the force applied is), therefore

Fx= -60 N [right]

x= 1.5 m

Step 2

Use the equation:

Fx= -kx

-60= -k(1.5)

k= 40 N/m

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Q: A spring stretches 1.5 meters when a force of 60 N is applied to it What is the spring constant?
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