Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Gravitation question

2021 · 25 Feb · Shift 2 · Q70
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Gravitation
  5. /2021 · 25 Feb · Shift 2 · Q70

Gravitation question

2021 · 25 Feb · Shift 2 · Q70

JEE MainPhysicsGravitationNumerical+4 / −1
The initial velocity vi required to project a body vertically upward from the surface of the earth to reach a height of 10R, where R is the radius of the earth, may be described in terms of escape velocity ve such that vi=xy×ve{v_i} = \sqrt {{x \over y}} \times {v_e}vi​=yx​​×ve​. The value of x will be ‾\underline{\hspace{2cm}}​.
Numerical answer
PreviousNext

More from Gravitation

  • The minimum and maximum distances of a planet revolving around the sun are x1 and x2. If the minimum speed of the planet on its trajectory is v0 then its maximum speed will be :2021 · MCQ
  • Consider a planet in some solar system which has a mass double the mass of earth and density equal to the average density of earth. If the weight of an object on earth is W, the weight of the same object on that planet will be :2021 · MCQ
  • Inside a uniform spherical shell : (1) the gravitational field is zero (2) the gravitational potential is zero (3) the gravitational field is same everywhere (4) the gravitational potential is same everywhere (5) all of the above Choose…2021 · MCQ
  • A planet revolving in elliptical orbit has : A. a constant velocity of revolution. B. has the least velocity when it is nearest to the sun. C. its areal velocity is directly proportional to its velocity. D. areal velocity is inversely…2021 · MCQ
  • Find the gravitational force of attraction between the ring and sphere as shown in the diagram, where the plane of the ring is perpendicular to the line joining the centres. If 8​ R is the distance between the centres of a ring (of… Includes diagram2021 · MCQ
  • In the reported figure of earth, the value of acceleration due to gravity is same at point A and C but it is smaller than that of its value at point B (surface of the earth). The value of OA : AB will be x : y. The value of x is ​… Includes diagram2021 · Numerical
  • A body of mass (2M) splits into four masses (m, M − m, m, M − m}, which are rearranged to form a square as shown in the figure. The ratio of mM​ for which, the gravitational potential energy of the system becomes maximum is x… Includes diagram2021 · Numerical
  • A mass of 50 kg is placed at the centre of a uniform spherical shell of mass 100 kg and radius 50 m. If the gravitational potential at a point, 25 m from the centre is V kg/m. The value of V is :2021 · MCQ