which of the following is zero at the centre of the earth? (a) mass, (b) weight
Answers
Answer:
b) weight
Explanation:
The correct answer is WEIGHT is zero at the centre if earth. Since mass is defined as the amount of matter present in a body, which can't be zero. Now, weight = mass × acceleration due to gravity (g). W = mg = m × 0 = 0. (because g = 0 at the centre of earth.)
At the Earth's core, all weight is zero.
The force that pulls the body towards the earth's core is called weight.
W = m × g
The weight of the human body changes as the value of g varies from place to place.
Because we are surrounded by equal masses in all directions, the acceleration due to gravity, g, is 0 at the earth's core. As a result, the analogous gravitational force exerted on us by the earth is zero, and hence we experience no acceleration owing to gravity.
W = m × g = 0 = 0
As a result, at the earth's core has no weight.