The mass of the Earth is ________.
6 × 10 24 kg
Correct Answer: Option 4 – 6 × 10²⁴ kg
Earth's Mass:
• The actual mass of the Earth is approximately 5.972 × 10²⁴ kg.
• In school-level questions, it is usually rounded to 6 × 10²⁴ kg.
How Scientists Calculate Earth's Mass:
Scientists use Newton's Law of Universal Gravitation:
g = GM/R²
Where:
• g = Acceleration due to gravity (≈ 9.8 m/s²)
• G = Universal gravitational constant
• M = Mass of the Earth
• R = Radius of the Earth
Using known values of g, G, and R, the Earth's mass can be calculated.
Therefore, the mass of the Earth is approximately 6 × 10²⁴ kg.
Important Questions from Gravity
Which of the following statement is correct?
I. Gravitation is a weak force unless large masses are involved.
II. The weight is equal to the product of mass and acceleration due to gravity.
What is the reason that the value of g (acceleration due to gravity) becomes greater at the poles than at the equator?
If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is twice as that of earth is ___________.
A man's mass is 72 kg on the earth. His mass on the moon will be:
The weight of 6 kg mass of a body on the surface of moon is about (for earth, \(g = 10 m/s^2 \) )
