The gravitational acceleration is maximum on poles as compared to that on equator because:
Correct answer: A. Distance between the poles and center of the earth is less as compared to that between the equator & center.
- A. Distance between the poles and center of the earth is less as compared to that between the equator & center.
- B. Distance between the poles and the center of the earth is more as compared to that between the equator and center.
- C. The mass of the earth on the poles is greater as compared to that on the equator.
- D. The mass of the earth on the poles is less as compared to that on the equator.
Explanation
The correct option is: A) Distance between the poles and the center of the Earth is less as compared to that between the equator and center. The gravitational acceleration depends on both the mass of the Earth and the distance from the center of the Earth. The formula for gravitational acceleration is given by: g= GM/r 2 Option A is correct because the distance, r, in the gravitational acceleration formula, is the distance from the center of the Earth. The Earth is not a perfect sphere; it is slightly flattened at the poles and bulging at the equator due to its rotation. Therefore, the distance from the center of the Earth to the poles is less than the distance to the equator. Option B is incorrect because the distance between the poles and the center of the Earth is less. Option C and D are incorrect because the mass of the Earth is considered constant in this context, and the variation in gravitational acceleration is primarily due to the variation in distance from the center of the Earth.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Gravitation
Newton’s law of universal gravitation relates the force between masses to their masses and separation, while gravitational field strength explains weight and orbital motion. The topic covers satellite velocity and period, escape ideas, weightlessness in free fall, and artificial gravity, which differs from ordinary gravitational attraction.
Practise Gravitation
265 free Gravitation MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 11 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Gravitation questions
If the mass of the Earth becomes four times large, the value of 'g' will:
If the Earth were three times farther from the Sun than it is now, the gravitational force exerted on Earth by the sun would be:
Two masses 10 cm apart, attract each other with a force,f Newtons. When 5 cm apart, these masses will attract each other with a force (in Newtons) of:
An astronaut of weight, 'mg' is moving upwards in a rocket with an acceleration, '4g'. His apparent weight inside that rocket will be:
Free falling bodies:
A boy standing in a lift falling freely under gravity releases a ball from his hand. As seen by him the ball: