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Q99 (CDS-II/2011) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic mechanics concepts Answer Verified

A body has a mass of 6 kg on the Earth; when measured on the Moon, its mass would be

Result
Your answer: —  Â·  Correct: D
Explanation

In physics, mass and weight are distinct concepts. Mass is defined as the quantity of matter present in an object and is measured in kilograms (kg) [c3]. It is an intrinsic property of a body that remains constant regardless of its location in the universe [c2, t1]. Whether an object is on Earth, the Moon, or in deep space, its mass does not change [t5, t8]. Weight, however, is the gravitational force acting on that mass and varies depending on the local gravitational pull [c2, t1]. While the Moon's gravity is approximately one-sixth of Earth's, causing the weight of an object to decrease, the mass remains identical [c1, t5]. Therefore, a body with a mass of 6 kg on Earth will still have a mass of exactly 6 kg on the Moon [t6].

Sources

  1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 9: The Amazing World of Solutes, Solvents, and Solutions > A step further > p. 142
  2. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > A step further > p. 75
  3. [3] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > Prepare some questions based on your learnings so far ... > p. 78
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