Find the odd one out regarding contact forces:

Find the odd one out regarding contact forces:
  1. Chewing food using jaw muscles
  2. Kicking a stone on the ground
  3. A compass needle turning toward Earth's North pole
  4. Squeezing toothpaste out of a tube

Solution

A compass needle moving due to Earth's magnetic field involves a non-contact force, whereas all other options involve contact forces.

Asked in: Homi Bhabha Practice

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