Cengage JEE Mains Physics by B.M Sharma
If W1,W2 and W3 represent the work done in moving a particle from A to B along three different paths 1,2 and 3 respectively (as shown) in a gravitational field of point mass m, then find the correct relation between W1,W2 and W3.
13
Sep
If W1,W2 and W3 represent the work done in moving a particle from A to B along three different paths 1,2 and 3 respectively (as shown) in a gravitational field of point mass m, then find the correct relation between W1,W2 and W3. 2 and 3 respectively (as shown) in a gravitational field of point [...]
A geostationary satellite orbits around the earth in a circular orbit of radius 36000km. Then, the time period of a spy satellite orbiting a few hundred kilometers above the earth’s surface will approximately be ( Given: R Earth=6400 km)
13
Sep
A geostationary satellite orbits around the earth in a circular orbit of radius 36000km. Then, the time period of a spy satellite orbiting a few hundred kilometers above the earth’s surface will approximately be ( Given: R Earth=6400 km) A geostationary satellite orbits around the earth in a circular orbit of radius 36000km. Then the [...]
A solid sphere of radius R/2 is cut out of a solid sphere of radius R such that the spherical cavity so formed touches the surface on one side and the centre of the sphere on other side, as shown. The initial mass of the solid sphere was M. If a particle of mass m is placed at a distance 2.5R from the centre of the cavity, then what is the gravitational attraction on the mass m?
13
Sep
A solid sphere of radius R/2 is cut out of a solid sphere of radius R such that the spherical cavity so formed touches the surface on one side and the centre of the sphere on other side, as shown. The initial mass of the solid sphere was M. If a particle of mass m [...]
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A solid sphere of radius R/2 is cut out of a solid sphere of radius R such that the spherical cavity so formed touches the surface on one side and the centre of the sphere on other side ,
as shown. The initial mass of the solid sphere was M. If a particle of mass m is placed at a distance 2.5R from the centre of the cavity ,
then what is the gravitational attraction on the mass m? ,
The gravitational force between two objects is proportional to1/R (and not as 1/R^2) where R is separation between them, then a particle in a circular orbit under such a force would have its orbital speed ν proportional to
13
Sep
The gravitational force between two objects is proportional to1/R (and not as 1/R^2) where R is separation between them, then a particle in a circular orbit under such a force would have its orbital speed ν proportional to The gravitational force between two objects is proportional to1/R (and not as 1/R^2) where R is separation [...]
From a solid sphere of mass M and radius R, a spherical portion of radius 2R is removed, as shown in the figure. Taking gravitational potential V=0 at r=∞ , the potential at the centre of the cavity thus formed is : (G= gravitational constant)
13
Sep
From a solid sphere of mass M and radius R, a spherical portion of radius 2R is removed, as shown in the figure. Taking gravitational potential V=0 at r=∞ , the potential at the centre of the cavity thus formed is : (G= gravitational constant) a spherical portion of radius 2R is removed as shown [...]
Four particles, each of mass M and equidistant from each other, move along a circle of radius R under the action of their mutual gravitational attraction. The speed of each particle is:
13
Sep
Four particles, each of mass M and equidistant from each other, move along a circle of radius R under the action of their mutual gravitational attraction. The speed of each particle is: each of mass M and equidistant from each other Four particles move along a circle of radius R under the action of their [...]
What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R ?
13
Sep
What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R ? What is the minimum energy required to launch a satellite of mass m from the surface of a planet of [...]
The mass of a spaceship is 1000 kg. It is to be launched from the earths surface out into free space. The value of g and R (radius of earth) are 10 m/s and 6400 km respectively. The required energy for this work will be :
13
Sep
The mass of a spaceship is 1000 kg. It is to be launched from the earths surface out into free space. The value of g and R (radius of earth) are 10 m/s and 6400 km respectively. The required energy for this work will be : A planet in a distant solar system is 10 [...]
The height at which the acceleration due to gravity becomes g/9 (where g = is the acceleration due to gravity on the surface of the earth) in terms of R, the radius of the earth, is
13
Sep
The height at which the acceleration due to gravity becomes g/9 (where g = is the acceleration due to gravity on the surface of the earth) in terms of R, the radius of the earth, is is The height at which the acceleration due to gravity becomes g/9 (where g = is the acceleration due [...]
A planet in a distant solar system is 10 times more massive than the earth and its radius is 10 times smaller. Given that the escape velocity from the earth is 11ms^−1, the escape velocity from the surface of the planet would be
13
Sep
A planet in a distant solar system is 10 times more massive than the earth and its radius is 10 times smaller. Given that the escape velocity from the earth is 11ms^−1, the escape velocity from the surface of the planet would be A planet in a distant solar system is 10 times more massive [...]