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NEET Physics · Medium

System of Particles & Rotational Motion: Torque MCQ

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TorqueMediumQuestion 6125

Question

A door (width 1 m) is pushed at the edge perpendicular to it with 20 N. Torque about hinge:
  1. A
    20 N·m
    Correct
  2. B
    10 N·m
  3. C
    0.5 N·m
  4. D
    40 N·m

Correct answer

20 N·m

Explanation

τ = r × F sin90° = 1 × 20 × 1 = 20 N·m.

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