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?
A man's mass is 72 kg on the earth. His mass on the moon will be:
At which of the following place, weight of an object is maximum?
What is the weight of an object of mass 40 kg, if the acceleration due to gravity at that place is 9.8 m/s2?
