NCERT Exemplar Class 11
A comet orbits the sun in a highly elliptical orbit. Does the comet have a constant (a) Linear speed, (b) angular speed, (c) Angular momentum, (d) Kinetic energy, (e) potential energy, (f) total energy throughout its orbit? Neglect any mass loss of the comet when it comes very close to the Sun.
19
Sep
A comet orbits the sun in a highly elliptical orbit. Does the comet have a constant (a) Linear speed, (b) angular speed, (c) Angular momentum, (d) Kinetic energy, (e) potential energy, (f) total energy throughout its orbit? Neglect any mass loss of the comet when it comes very close to the Sun. (b) angular speed [...]
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(b) angular speed ,
(c) Angular momentum ,
(d) Kinetic energy ,
(e) potential energy ,
(f) total energy throughout its orbit? Neglect any mass loss of the comet when it comes very close to the Sun. ,
A comet orbits the sun in a highly elliptical orbit. Does the comet have a constant (a) Linear speed ,
Let us assume that our galaxy consists of 2.5×10^11 stars each of one solar mass. How long will a star at a distance of 50,000 light year from the galactic centre take to complete one revolution ? Take the diameter of the Milky Way to be 10^5 light years.
19
Sep
Let us assume that our galaxy consists of 2.5×10^11 stars each of one solar mass. How long will a star at a distance of 50,000 light year from the galactic centre take to complete one revolution ? Take the diameter of the Milky Way to be 10^5 light years. 000 light year from the galactic [...]
One of the satellites of Jupiter has an orbital period of 1.769 days and the radius of the orbit is 4.22×10^8 m. Show that the mass of Jupiter is about one-thousandth that of the sun.
19
Sep
One of the satellites of Jupiter has an orbital period of 1.769 days and the radius of the orbit is 4.22×10^8 m. Show that the mass of Jupiter is about one-thousandth that of the sun. One of the satellites of Jupiter has an orbital period of 1.769 days and the radius of the orbit is [...]
Suppose there existed a planet that went around the sun twice as fast as the earth. What would be its orbital size as compared to that of the earth ?
19
Sep
Suppose there existed a planet that went around the sun twice as fast as the earth. What would be its orbital size as compared to that of the earth ? Suppose there existed a planet that went around the sun twice as fast as the earth. What would be its orbital size as compared to [...]
(c) If you compare the gravitational force on the earth due to the sun to that due to the moon, you would find that the Sun’s pull is greater than the moon’s pull. However, the tidal effect of the moon’s pull is greater than the tidal effect of the sun. Why?
19
Sep
(c) If you compare the gravitational force on the earth due to the sun to that due to the moon, you would find that the Sun’s pull is greater than the moon’s pull. However, the tidal effect of the moon’s pull is greater than the tidal effect of the sun. Why? (c) If you compare [...]
(b) An astronaut inside a small space ship orbiting around the earth cannot detect gravity. If the space station orbiting around the earth has a large size, can he hope to detect gravity?
19
Sep
(b) An astronaut inside a small space ship orbiting around the earth cannot detect gravity. If the space station orbiting around the earth has a large size, can he hope to detect gravity? (b) An astronaut inside a small space ship orbiting around the earth cannot detect gravity. If the space station orbiting around the [...]
Answer the following: (a) You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means?
19
Sep
Answer the following: (a) You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means? Draw areal velocity versus time graph for mars. September 19, 2020 Category: [...]
A satellite is to be placed in equatorial geostationary orbit around earth for communication.
19
Sep
A satellite is to be placed in equatorial geostationary orbit around earth for communication. A satellite is to be placed in equatorial geostationary orbit around earth for communication. September 19, 2020 Category: Chapter 7 - Gravitation , NCERT Exemplar Class 11 , Physics ,
A star like the sun has several bodies moving around it at different distances. Consider that all of them are moving in circular orbits. Let r be the distance of the body from the centre of the star and let its linear velocity be v, angular velocity to, kinetic energy K, gravitational potential energy U, total energy E and angular momentum /. As the radius r of the orbit increases, determine which of the above quantities increase and which ones decrease.
19
Sep
A star like the sun has several bodies moving around it at different distances. Consider that all of them are moving in circular orbits. Let r be the distance of the body from the centre of the star and let its linear velocity be v, angular velocity to, kinetic energy K, gravitational potential energy U, [...]
A mass m is placed at P at a distance h along the normal through the centre O of a thin circular ring of mass M and radius r as shown in figure.
19
Sep
A mass m is placed at P at a distance h along the normal through the centre O of a thin circular ring of mass M and radius r as shown in figure. A mass m is placed at P at a distance h along the normal through the centre O of a thin circular [...]