Question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : If we move from poles to equator, the direction of acceleration due to gravity of earth always points towards the center of earth without any variation in its magnitude.
Reason R : At equator, the direction of acceleration due to the gravity is towards the center of earth. In the light of above statements, choose the correct answer from the options given below :

• A. Both $A$ and $R$ are true and $R$ is the correct explanation of $A$.
• B. Both $A$ and $R$ are true but $R$ is NOT the correct explanation of $A$.
• C. $A$ is true but $R$ is false
• D. $A$ is false but $R$ is true

Answer 1

Answer: (D)

Effective acceleration due to gravity is the resultant of $g \& rw ^{2}$ whose direction \& magnitude depends upon $\theta$. Hence assertion is false.
When $\theta=0^{\circ}$ (at equator), effective acceleration is radially inward.