General
Easy
Physics

A satellite of mass m is orbiting close to the surface of the earth (Radius R=6400 km ) has a K.E. K. The corresponding K.E. of satellite to escape from the earth's gravitational field is

PhysicsGeneral

  1. k
  2. mk
  3. mg R
  4. 2k

    Answer:The correct answer is: 2k

    Book A Free Demo

    +91

    Grade*

    Related Questions to study

    General
    physics-

    A blankbody of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is if the body is pulled by a force P as shown in figure the limiting function between body and surface will be

    A blankbody of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is if the body is pulled by a force P as shown in figure the limiting function between body and surface will be

    physics-General
    General
    physics-

    Three blocks A,B, and C of equal mass m are placed one over the other, one on a smooth horizontal ground as shown in figure. Cefixime of friction between any two blocks of A,B and C is 0.5. What would he the maximum value of mass of block D so that the blocks A,B and C move without slipping over each other '?

    Three blocks A,B, and C of equal mass m are placed one over the other, one on a smooth horizontal ground as shown in figure. Cefixime of friction between any two blocks of A,B and C is 0.5. What would he the maximum value of mass of block D so that the blocks A,B and C move without slipping over each other '?

    physics-General
    General
    physics-

    A bag of sand of mass m is suspended hy rope. A bullet of mass m/30 is fired at it with a velocity v and gets embedded into it . The velocity of the bag finally is

    A bag of sand of mass m is suspended hy rope. A bullet of mass m/30 is fired at it with a velocity v and gets embedded into it . The velocity of the bag finally is

    physics-General
    General
    physics-

    Three blocks having equal mass of 2 text end text k g are hanging on a string passing over a pulley as shown in figure. whal will be the tension prodoced in a string connccting the blocks B and C.

    Three blocks having equal mass of 2 text end text k g are hanging on a string passing over a pulley as shown in figure. whal will be the tension prodoced in a string connccting the blocks B and C.

    physics-General
    General
    physics-

    A block of mass m equals 2 times k subscript E end subscript is resting on a rough inclined plane of inclination 30° as shown in fignre. The coefficient of friction between the block and the plane is =0.5. What minimam force F shald be applied perpendicular to the plane of block does not slip on the plane ? open parentheses g equals 10 text end text m s to the power of negative 2 end exponent close parentheses

    A block of mass m equals 2 times k subscript E end subscript is resting on a rough inclined plane of inclination 30° as shown in fignre. The coefficient of friction between the block and the plane is =0.5. What minimam force F shald be applied perpendicular to the plane of block does not slip on the plane ? open parentheses g equals 10 text end text m s to the power of negative 2 end exponent close parentheses

    physics-General
    General
    physics-

    Three masses 1 text end text k g comma 6 text end text k g and 3 text end text k g are connccied to cach other with threads and are placed on a table as shown in figure. The alcceleration with which the system is moving is negative m s to the power of 2 end exponent open parentheses g equals 10 m s to the power of 2 end exponent close parentheses

    Three masses 1 text end text k g comma 6 text end text k g and 3 text end text k g are connccied to cach other with threads and are placed on a table as shown in figure. The alcceleration with which the system is moving is negative m s to the power of 2 end exponent open parentheses g equals 10 m s to the power of 2 end exponent close parentheses

    physics-General
    General
    physics-

    If the surfaces shown in figure are frictionless, the ratio of T subscript 1 end subscript and T subscript 2 end subscript is

    If the surfaces shown in figure are frictionless, the ratio of T subscript 1 end subscript and T subscript 2 end subscript is

    physics-General
    General
    physics-

    Three blocks of masers m subscript 1 end subscript comma m subscript 2 end subscript and m subscript 3 end subscript text end text a r e blank c o n n e c t e d by massless strings as shown in figure, on a frictionless table. They are Pulled with the force T subscript 3 end subscript equals 40 text end text N. If m subscript 1 end subscript equals 10 text end text k g comma text end text m subscript 2 end subscript equals 6 text end text k g and m subscript 3 end subscript equals 4 k g the tension T subscript 2 end subscript will b e equals horizontal ellipsis horizontal ellipsis blank N

    Three blocks of masers m subscript 1 end subscript comma m subscript 2 end subscript and m subscript 3 end subscript text end text a r e blank c o n n e c t e d by massless strings as shown in figure, on a frictionless table. They are Pulled with the force T subscript 3 end subscript equals 40 text end text N. If m subscript 1 end subscript equals 10 text end text k g comma text end text m subscript 2 end subscript equals 6 text end text k g and m subscript 3 end subscript equals 4 k g the tension T subscript 2 end subscript will b e equals horizontal ellipsis horizontal ellipsis blank N

    physics-General
    General
    physics

    A planet moving along an elliptical orbit is closest to the sun at a distance r1 and farthest away at a distance of r2. If v1 and v2 are the liner velocities at these points respectively, then the ratio v subscript 1 over v subscript 2 is

    A planet moving along an elliptical orbit is closest to the sun at a distance r1 and farthest away at a distance of r2. If v1 and v2 are the liner velocities at these points respectively, then the ratio v subscript 1 over v subscript 2 is

    physicsGeneral
    General
    maths-

    Assertion left parenthesis A right parenthesis colon If u equals log space open parentheses fraction numerator x squared plus y squared over denominator x minus y end fraction close parentheses then x squared u subscript x x end subscript plus 2 x y u subscript x y end subscript plus y squared u subscript y y end subscript equals negative 1

    Reason left parenthesis bold R right parenthesis colon If u equals f left parenthesis x comma y right parenthesis  is a homogeneous function in x comma y of degree ' n ' then x squared u subscript x x end subscript plus 2 x y u subscript x y end subscript plus y squared u subscript y y end subscript equals n left parenthesis n minus 1 right parenthesis u

    Assertion left parenthesis A right parenthesis colon If u equals log space open parentheses fraction numerator x squared plus y squared over denominator x minus y end fraction close parentheses then x squared u subscript x x end subscript plus 2 x y u subscript x y end subscript plus y squared u subscript y y end subscript equals negative 1

    Reason left parenthesis bold R right parenthesis colon If u equals f left parenthesis x comma y right parenthesis  is a homogeneous function in x comma y of degree ' n ' then x squared u subscript x x end subscript plus 2 x y u subscript x y end subscript plus y squared u subscript y y end subscript equals n left parenthesis n minus 1 right parenthesis u

    maths-General
    General
    maths-

    If the unit vectors a with not stretchy bar on top and b with not stretchy bar on top are inclined at an angle 2 theta such that vertical line a with not stretchy bar on top minus b with not stretchy bar on top vertical line less than 1, then theta lies in the interval

    If the unit vectors a with not stretchy bar on top and b with not stretchy bar on top are inclined at an angle 2 theta such that vertical line a with not stretchy bar on top minus b with not stretchy bar on top vertical line less than 1, then theta lies in the interval

    maths-General
    General
    physics-

    Two blocks of Nass 8 text end text k g and 4 text end text k g ane connected a heavy string placed on rough horizontal plane, the 4 kg block is Pulled with a constant force F. The co-efficient of friction between the blocks and the ground is 0.5, what is the value of F, So that the tension in the spring is constant throughout during the motion of the blocks? open parentheses g equals 10 text end text m s to the power of negative 2 end exponent close parentheses

    Two blocks of Nass 8 text end text k g and 4 text end text k g ane connected a heavy string placed on rough horizontal plane, the 4 kg block is Pulled with a constant force F. The co-efficient of friction between the blocks and the ground is 0.5, what is the value of F, So that the tension in the spring is constant throughout during the motion of the blocks? open parentheses g equals 10 text end text m s to the power of negative 2 end exponent close parentheses

    physics-General
    General
    physics-

    A plate of mass M is placed on a horizontal frictionless surface and a body of mass m is placed on this plate, The coefficient of dynamic friction between this body and the plate is mu. If a force 2 mu m g. is applied to the body of mass in along the horizonal direction the acceleration of the plate will be ……

    A plate of mass M is placed on a horizontal frictionless surface and a body of mass m is placed on this plate, The coefficient of dynamic friction between this body and the plate is mu. If a force 2 mu m g. is applied to the body of mass in along the horizonal direction the acceleration of the plate will be ……

    physics-General
    General
    physics-

    Three forces are acting simultaneously on a particle mowing with velocity stack V with rightwards arrow on top. These forces are represcaled in magnitude and dircction by the three sidcs of a triangle A B C. The particle will now move with velocity…..

    Three forces are acting simultaneously on a particle mowing with velocity stack V with rightwards arrow on top. These forces are represcaled in magnitude and dircction by the three sidcs of a triangle A B C. The particle will now move with velocity…..

    physics-General
    General
    physics-

    A body of 2 kg has an initial speed 5 m/s. A force act c o s it for some time in the directive of motion. The force left parenthesis stack F with rightwards arrow on top right parenthesis-me time (t) graph is shown in figure. The final speed of the body is

    A body of 2 kg has an initial speed 5 m/s. A force act c o s it for some time in the directive of motion. The force left parenthesis stack F with rightwards arrow on top right parenthesis-me time (t) graph is shown in figure. The final speed of the body is

    physics-General