Chapter 10 – Gravitation
If g is the acceleration due to gravity on the earth’s surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth, is
13
Sep
If g is the acceleration due to gravity on the earth’s surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth, is If g is the acceleration due to gravity on the earth's surface [...]
Two bodies with masses M1 and M2 are initially at the rest and a distance R apart. Then they move directly towards one another under the influence of their mutual gravitational attraction. What is the ratio of the distances traveled by M1 to the distance traveled by M2?
13
Sep
Two bodies with masses M1 and M2 are initially at the rest and a distance R apart. Then they move directly towards one another under the influence of their mutual gravitational attraction. What is the ratio of the distances traveled by M1 to the distance traveled by M2? If the radius of the earth decreases [...]
The distance between the centres of the Moon and the earth is D. The mass of the earth is 81 times the mass of the Moon. At what distance from the centre of the earth, the gravitational force will be zero?
13
Sep
The distance between the centres of the Moon and the earth is D. The mass of the earth is 81 times the mass of the Moon. At what distance from the centre of the earth, the gravitational force will be zero? The distance between the centres of the Moon and the earth is D. The [...]
If a man at the equator would weigh (3/5)th of his weight, the angular speed of the earth is
13
Sep
If a man at the equator would weigh (3/5)th of his weight, the angular speed of the earth is If a man at the equator would weigh (3/5)th of his weight the angular speed of the earth is September 13, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 10 - Gravitation ,
The distances from the centre of the earth, where the weight of a body is zero and one-fourth that of the weight of the body on the surface of the earth are(assume R is the radius of the earth).
13
Sep
The distances from the centre of the earth, where the weight of a body is zero and one-fourth that of the weight of the body on the surface of the earth are(assume R is the radius of the earth). The distances from the centre of the earth where the weight of a body is zero [...]
Two equal masses each ′m′ are hung from a balance whose scale pans differ in vertical height by ′h′. the error in weighing in terms of density of the earth p is
13
Sep
Two equal masses each ′m′ are hung from a balance whose scale pans differ in vertical height by ′h′. the error in weighing in terms of density of the earth p is Two equal masses each ′m′ are hung from a balance whose scale pans differ in vertical height by ′h′. the error in weighing [...]
The maximum vertical distance through which a fully dressed astronaut can jump on the earth is 0.5m. If mean density of the Moon is two-third that of the earth and radius is one quarter that of the earth, the maximum vertical distance which he can jump on the Moon and the ratio of the time of duration of the jump on the Moon to hold on the earth are
13
Sep
The maximum vertical distance through which a fully dressed astronaut can jump on the earth is 0.5m. If mean density of the Moon is two-third that of the earth and radius is one quarter that of the earth, the maximum vertical distance which he can jump on the Moon and the ratio of the time [...]
If the radius of the earth decreases by 10%, the mass remaining unchanged, what will happen to the acceleration due to gravity?
13
Sep
If the radius of the earth decreases by 10%, the mass remaining unchanged, what will happen to the acceleration due to gravity? If the radius of the earth decreases by 10% the mass remaining unchanged what will happen to the acceleration due to gravity? September 13, 2020 Category: Cengage JEE Mains Physics by B.M Sharma [...]
Three uniform spheres, each having mass m and radius R, are kept in such a way that each touches the other two, the magnitude of the gravitational force on any sphere due to the other two is
13
Sep
Three uniform spheres, each having mass m and radius R, are kept in such a way that each touches the other two, the magnitude of the gravitational force on any sphere due to the other two is are kept in such a way that each touches the other two each having mass m and radius [...]
Two satellites A and B of masses m1 and m2(m1 = 2m2) are moving in circular orbits of radii r1 and r2(r1 = 4r2), respectively, around the earth. If their periods are TA and TB, then the ratio TA/TB is
13
Sep
Two satellites A and B of masses m1 and m2(m1 = 2m2) are moving in circular orbits of radii r1 and r2(r1 = 4r2), respectively, around the earth. If their periods are TA and TB, then the ratio TA/TB is around the earth. If their periods are TA and TB respectively then the ratio TA/TB [...]