The velocity with which a projectile must be fired so that it escapes Earth's gravitation does not depend on:
Correct answer: B. Mass of the projectile
- A. Mass of the earth
- B. Mass of the projectile
- C. Radius of the projectile's orbit
- D. Gravitational constant
Explanation
This is the following solution: The correct option is the mass of the projectile: The escape velocity is solely determined by the mass of the celestial body from which the projectile is being launched (in this case, the Earth) and the radius from the center of the body to the projectile's starting point.The escape velocity, denoted as ve, can be calculated using the formula:ve = √((2GM)/r),where G is the gravitational constant, M is the mass of the celestial body (Earth), and r is the distance from the center of the celestial body to the projectile's starting point.
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
The kinetic energy needed to project a body of mass m from the earth's surface to infinity is :
If suddenly the gravitational force of attraction between earth and a satellite revolving around it becomes zero, then the satellite will:
Which of the following statements is absolutely correct about mass?
When a body is taken from the equator to the poles, its weight:
If the radius of the Earth becomes half of its present value (mass remaining the same), the new length of the day would be:
If the distance between two masses is doubled, the gravitational attraction between them is: