Question Detail

PHY 101 Work, Energy and Power Objective Question

Question

What is the formula for the force required to compress or stretch a spring?
Options
A F_s = kx
B F_s = -kx
Correct Answer
C F_s = ½kx²
D F_s = -½kx²
Correct Answer

Option B is the correct answer.

Detailed Explanation

The force required to compress or stretch a spring is given by Hooke's law: F_s = -kx, where k is the spring constant and x is the displacement from equilibrium. The negative sign indicates the force is opposite to the displacement.

Hint

It's a restoring force, always pointing back towards equilibrium.

Question Info