Propose a force standard different from the example of a stretched spring discussed in the text. Your standard must be capable of producing the same force repeatedly.
In analogy to the force standard example given, we can propose a simple pendulum. In a simple pendulum, we have a point mass that is suspended from a string or a wire having a negligible mass.
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The mass is displaced by a certain amount (angle ) to a position and if it is released from that position, it will oscillate about the equilibrium position of the pendulum.
Consider the following figure to understand the situation.