Multiple choice general knowledge

What is the value of gravity at the centre of the earth?

  1. 1

  2. infinity

  3. 0

  4. -2.7321
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The value of gravity at Earth's center is zero because gravitational force from all directions cancels out at the center. At Earth's surface it's about 9.8 m/s², but it decreases as you go toward the center and becomes zero there. The question has a typo ('g' should be 'gravity').

Keep practicing — related questions