Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
Estimate whether it takes more energy to get a satellite upto 1600km above the earth than to put in orbit there. Earth’s radius is 6400km. Does your answer remain same for height 3200km or for height 4800km?
27
Aug
Estimate whether it takes more energy to get a satellite upto 1600km above the earth than to put in orbit there. Earth’s radius is 6400km. Does your answer remain same for height 3200km or for height 4800km? Calculate the velocity with which a body must be thrown vertically from the surface of the earth so [...]
Distance between the centres of two stars is 10a. The masses of these stars are M and 16M and their radii a and 2a respectively. A body of mass m is fired straight from the surface of the larger star towards the smaller star. What should be its minimum initial speed to reach the surface of the smaller star? Obtain the expression in terms of G,Mand a.
27
Aug
Distance between the centres of two stars is 10a. The masses of these stars are M and 16M and their radii a and 2a respectively. A body of mass m is fired straight from the surface of the larger star towards the smaller star. What should be its minimum initial speed to reach the surface [...]
Calculate the velocity with which a body must be thrown vertically from the surface of the earth so that it may reach a height of 10 R, where R is the radius of the earth and is equal to 6.4 × 10^8 m. (earth’s mass=6 × 10^24 kg, gravitational constant
27
Aug
Calculate the velocity with which a body must be thrown vertically from the surface of the earth so that it may reach a height of 10 R, where R is the radius of the earth and is equal to 6.4 × 10^8 m. (earth’s mass=6 × 10^24 kg, gravitational constant Calculate the velocity with which [...]
A body is released at a distance far away from the surface of the earth. Calculate its speed when it is near the surface of earth. Given g=9.8m s −2 , radius of earth R=6.37×10 6 m.
27
Aug
A body is released at a distance far away from the surface of the earth. Calculate its speed when it is near the surface of earth. Given g=9.8m s −2 , radius of earth R=6.37×10 6 m. A body is released at a distance far away from the surface of the earth. Calculate its speed [...]
Two particles of masses m and M are initially at rest at an infinite distance apart. They move towards each other and gain speeds due to gravitational attraction. Find their speeds when the separation between the masses becomes equal to d.
27
Aug
Two particles of masses m and M are initially at rest at an infinite distance apart. They move towards each other and gain speeds due to gravitational attraction. Find their speeds when the separation between the masses becomes equal to d. If g is the acceleration due to gravity on the earth's surface is the [...]
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
27
Aug
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 [...]
Three particles each of the mass m are placed at the corners of an equilateral triangle of side d and shown in figure. Calculate a the potential energy of the system b work done on this system if the side of the triangle is changed from d to 2d.
27
Aug
Three particles each of the mass m are placed at the corners of an equilateral triangle of side d and shown in figure. Calculate a the potential energy of the system b work done on this system if the side of the triangle is changed from d to 2d. Calculate the gravitational field intensity and [...]
Calculate the gravitational field intensity and potential at the centre of the base of a solid hemisphere of mass m, radius R.
27
Aug
Calculate the gravitational field intensity and potential at the centre of the base of a solid hemisphere of mass m, radius R. Calculate the gravitational field intensity and potential at the centre of the base of a solid hemisphere of mass m radius R. August 27, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
The gravitational field in a region is given by the equation E=(5i+12j)N/kg. If a particle of mass 2kg is moved from the origin to the point (12m,5m) in this region, the change in the gravitational potential energy is
27
Aug
The gravitational field in a region is given by the equation E=(5i+12j)N/kg. If a particle of mass 2kg is moved from the origin to the point (12m,5m) in this region, the change in the gravitational potential energy is 5m) in this region A train of mass m moves wiThe gravitational field in a region is [...]
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5m) in this region ,
A train of mass m moves wiThe gravitational field in a region is given by the equation E=(5i+12j)N/kg. If a particle of mass 2kg is moved from the origin to the point (12m ,
if the earth stops spinning about its axis? assumes the earth to be a sphere of radius 6.4 x 10^6m. ,
what will be the change in the value of g at a place whose latitude is 45degree ,
A train of mass m moves with a velocity v on the equator from east to west. If ω is the angular speed of earth about its axis and R is the radius of the earth then the normal reaction acting on the train is
27
Aug
A train of mass m moves with a velocity v on the equator from east to west. If ω is the angular speed of earth about its axis and R is the radius of the earth then the normal reaction acting on the train is if the earth stops spinning about its axis? assumes the [...]