हिंदी

A book resting on a table is being pushed upwards by the table. What is this upward force called?

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प्रश्न

A book resting on a table is being pushed upwards by the table. What is this upward force called?

विकल्प

  • Muscular force

  • Normal reaction force

  • Gravitational force

  • Friction force

MCQ
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उत्तर

Normal reaction force

Explanation:

This is the contact force exerted by a surface that acts perpendicular to it, preventing an object from falling through.

 
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