Average density of the Earth:
Correct answer: A. Is directly proportional to g
- A. Is directly proportional to g
- B. Is inversely proportional to g
- C. Does not depend on g
- D. Is a complex function of g
Explanation
The following is the solution: The gravitational constant g is given as: g=GM/R2 Density D=mass/volume =g×R2/G×Ve (Where Ve is the volume of the earth ) D=g×R2/ G×3/ 4 πR3 =3g/4πGR Hence, D∝g.
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
When you move from the equator to the poles, the value of acceleration due to gravity (g):
The weight of the body at the center of the Earth is:
A 2 kg body falls from infinity to the surface of earth. What will be the kinetic energy of the body on reaching the surface of Earth (Assume escape velocity to be 104 ms-1)?
The binding energy of a particle of mass m with a planet, when it is on the planet's surface, is 1/2mv02. A tunnel is dug along the diameter of the planet and the particle is dropped into it from the surface, when the body reaches the center of the planet, its speed is:
Force of gravitation is directly proportional to the product of _
Gravitational force is inversely proportional to_the two bodies: