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JEE Mains · Physics · STD 11 - 7. gravitation
Given below are two statements: Statement \(I:\) Rotation of the earth shows effect on the value of acceleration due to gravity \((g)\). Statement \(II:\) The effect of rotation of the earth on the value of \(g\) at the equator is minimum and that at the pole is maximum. In the light of the above statements, choose the correct answer from the options given below.
- A Statement \(I\) is false but Statement \(II\) is true.
- B Statement \(I\) is true but Statement \(II\) are false.
- C Both Statement \(I\) and Statement \(II\) are true.
- D Both Statement \(I\) and Statement \(II\) are false.
Answer & Solution
Correct Answer
(B) Statement \(I\) is true but Statement \(II\) are false.
Step-by-step Solution
Detailed explanation
Statement \(I\) is true due to centrifugal force. Statement \(II\) is incorrect, At pole \(g=g_s\) (no effect) At equator \(g=g_s-r \omega^2 \cos ^2 \lambda=g_s-r \omega^2\) \(\therefore\left(\cos ^2 \lambda_{\text {maximum }}\right.\) at \(\lambda=0^{\circ}\) i.e. at equator…
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