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Q32 (CDS-I/2021) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic mechanics concepts Answer Verified

The weight of an object is due to

Result
Your answer: —  Â·  Correct: C
Explanation

Weight is defined as the gravitational force with which a planet pulls an object [2]. According to Newton's Third Law, when the Earth exerts a gravitational pull on an object, the object exerts an equal and opposite force. In a static scenario where an object rests on a surface, its weight is manifested as the force it exerts on the ground. While mass is an intrinsic 'inert' property that remains constant, weight is a force that varies based on gravitational field strength [1]. Option 1 is incorrect because the net force on a stationary object is zero. Option 2 is incorrect as weight is a specific vector force (gravity), not a sum of all forces regardless of direction. Therefore, the weight of an object is effectively the force it exerts on the ground due to gravity.

Sources

  1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > A step further > p. 75
  2. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > Activity 5.8: Let us observe > p. 72
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