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Concepts Of Physics MCQ Edition [Volume 1]PhysicsThe Forces

If all matter were composed of electrically neutral particles like neutrons,

Options

  1. Asitting on a chair would be impossible
  2. Bthe earth would be unable to move around the sun
  3. Cthere would be no tension in a string
  4. Dthe force of friction would be absent

Correct answer

D. the force of friction would be absent

Step-by-step solution

The normal force, tension in a string, and the force of friction are all macroscopic manifestations of the electromagnetic force between atoms and molecules. If all matter were composed of electrically neutral particles, electromagnetic forces would cease to exist. Consequently, normal force, tension, and friction would be absent. The gravitational force depends only on mass and is independent of electric charge. Since neutral particles like neutrons possess mass, the gravitational force would still exist. Thus, th

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