Concepts Of Physics MCQ Edition [Volume 1]PhysicsThe Forces

A body builder applies a force of 150 N against a bullworker, compressing it by 20 cm . Determine the spring constant of the spring inside the bullworker.

Options

A3000 N/m
B30 N/m
C750 N/m
D7.5 N/m

Correct answer

C. 750 N/m

Step-by-step solution

Given applied force F = 150 N Compression x = 20 cm = 0.2 m Using Hooke's law, the magnitude of the restoring force is equal to the applied force: F = kx Substituting the given values: 150 = k 0.2 k = 150 0.2 = 750 N/m

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