GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which equation defines Hooke’s Law?
A
F = x
B
F = k x
C
F = 1/2 k x
D
F = 1/2 k x2
Explanation: 

Detailed explanation-1: -Mathematically, Hooke’s law states that the applied force F equals a constant k times the displacement or change in length x, or F = kx.

Detailed explanation-2: -’ In layman’s terms, the k variable in Hooke’s law (F =-kx) indicates stiffness and strength. The higher the value of k, the more force is needed to stretch an object to a given length.

Detailed explanation-3: -F =-kx. The proportional constant k is called the spring constant. It is a measure of the spring’s stiffness. When a spring is stretched or compressed, so that its length changes by an amount x from its equilibrium length, then it exerts a force F =-kx in a direction towards its equilibrium position.

Detailed explanation-4: -Mathematically, Hooke’s Law can be written as F=−kx. Many materials obey this law as long as the load does not exceed the material’s elastic limit. The rate or spring constant, k, relates the force to the extension in SI units: N/m or kg/s2.

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