Question
Download Solution PDFWhich of the following statements is INCORRECT regarding mass and weight of a body?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is The weight of a body remains the same on both the moon and earth.
Key Points
- The mass of a body remains constant regardless of its location, whether on Earth, the Moon, or elsewhere.
- Weight is the force exerted by gravity on a body and depends on the gravitational acceleration at the location.
- The weight of a body on the Moon is approximately one-sixth its weight on Earth due to the Moon's weaker gravitational pull.
- The unit of mass is the kilogram (kg), while the unit of weight is the newton (N).
- The statement "The weight of a body remains the same on both the Moon and Earth" is incorrect as weight changes with the gravitational force.
Additional Information
- Mass: Mass is a measure of the amount of matter in an object and is constant regardless of location. It is scalar and does not depend on gravity.
- Weight: Weight is a vector quantity and is calculated using the formula Weight = Mass × Gravitational Acceleration. On Earth, the gravitational acceleration is approximately 9.8 m/s².
- Gravitational Acceleration: The Moon's gravitational acceleration is about 1.63 m/s², which is much lower than Earth's, causing objects to weigh less on the Moon.
- Units of Measurement: The SI unit of mass is the kilogram (kg), and the SI unit of weight (force) is the newton (N), where 1 N = 1 kg·m/s².
- Practical Implications: Astronauts weigh less on the Moon, which affects their ability to move and carry objects. This difference is critical for space exploration and engineering designs.
Last updated on Apr 24, 2025
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