Physics
Grade-9
Easy

Question

Which frictional force is known as a self-adjusting force?

  1. Static friction
  2. Sliding friction
  3. Rolling friction
  4. Fluid friction

hintHint:

The static force adjusts its magnitude with an increase in the magnitude of the applied force.

The correct answer is: Static friction


    Static frictional force is a self-adjusting force.
    • The static frictional force limits the magnitude of the applied external force by counterbalancing.
    • This, frictional force equals the magnitude of the external force, until it surpasses the threshold of relative motion.
    • As the magnitude of the applied force increase, the magnitude of the static friction increases.

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