Question
Download Solution PDFThe force with which the Earth attracts an object is called:
This question was previously asked in
UPSC CDS-I 2025 (General Studies) Official Paper (Held On: 13 Apr, 2025)
Answer (Detailed Solution Below)
Option 1 : Weight of the object
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Detailed Solution
Download Solution PDFThe correct answer is Weight of the object.
Key Points
- The force with which the Earth attracts an object is called the weight of the object.
- Weight is determined by the gravitational force acting on the object's mass.
- The formula for weight is W = m × g, where 'm' is the mass of the object, and 'g' is the acceleration due to gravity (approximately 9.8 m/s² on Earth).
- Weight is a vector quantity, meaning it has both magnitude and direction; its direction is always toward the center of the Earth.
- Unlike mass, weight can change depending on the gravitational field strength (e.g., it is less on the Moon due to lower gravity).
Additional Information
- Mass: The quantity of matter in an object, measured in kilograms (kg). Mass is a scalar quantity and remains constant regardless of location.
- Density: Defined as mass per unit volume, represented by the formula ρ = m/V. It is a measure of how much mass is packed into a given volume.
- Gravitational force: A fundamental force of nature that attracts two bodies with mass toward each other. The gravitational force is responsible for the weight of objects on Earth.
- Magnitude: Refers to the size or quantity of a vector, such as force. It does not specify the nature or source of the force.
- On celestial bodies other than Earth, the gravitational acceleration 'g' differs, causing weight variations. For instance, on the Moon, gravity is approximately 1/6th that of Earth.
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