The escape velocity of a body from the earth is \( v_{e} \). If the radius of earth contracts to...

Channel:
Subscribers:
453,000
Published on ● Video Link: https://www.youtube.com/watch?v=AlB2GFngJbE



Duration: 1:55
4 views
0


The escape velocity of a body from the earth is \( v_{e} \). If the radius of earth contracts to \( (1 / 4) \) th of its value, keeping the mass of the earth constant, escape velocity will be
(a) doubled
(b) halved
(c) tripled
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live




Other Videos By PW Solutions


2022-11-07The mass of the earth is \( 6 \times 10^{24} \mathrm{~kg} \) and that of the moon is \( 7.4 \tim...
2022-11-07The potential energy of a satellite is given as \[ \mathrm{PE}=\lambda(\mathrm{KE}) \] where, \(...
2022-11-07The radius of the orbit of a satellite is \( r \) and its kinetic energy is \( K \). If the radi...
2022-11-07Three particles each of mass \( m \) are kept at vertices of an equilateral triangle of side \( ...
2022-11-07A black hole is an object whose gravitational field is so strong that even light cannot escape f...
2022-11-07The orbital angular momentum of a satellite revolving at a distance \( r \) from the centre is \...
2022-11-07Two stars of masses \( 3 \times 10^{31} \mathrm{~kg} \) each and at distance \( 2 \times 10^{11}...
2022-11-07A satellite \( S \) is moving in an elliptical orbit around the earth. The mass of the satellite...
2022-11-07An object is thrown from the surface of the moon. The escape speed for the object is (a) \( \sqr...
2022-11-07At what height from the surface of earth, the gravitation potential and the value of \( g \) are...
2022-11-07The escape velocity of a body from the earth is \( v_{e} \). If the radius of earth contracts to...
2022-11-07The gravitational potential at a distance \( r \) from the centre of the earth \( (rR) \) is giv...
2022-11-07Gas escapes from the surface of a planet because it acquires an escape velocity. The escape velo...
2022-11-07The work done to raise a mass \( m \) from the surface of the earth to a height \( h \), which i...
2022-11-07Gravitational potential energy of a system of particles as shown in the figure is (a) \( \frac{G...
2022-11-07A box weighs \( 196 \mathrm{~N} \) on a spring balance at the north pole. Its weight recorded on...
2022-11-07Two point masses \( m_{1} \) and \( m_{2} \) are separated by a distance \( r \). The gravitatio...
2022-11-07The acceleration due to gravity at a height \( 1 \mathrm{~km} \) above the earth is the same as ...
2022-11-07The gravitational potential energy of a system consisting two particles separated by a distance ...
2022-11-07A body weighs \( 200 \mathrm{~N} \) on the surface of the earth. How much will it weigh half-way...
2022-11-07If the mass of the sun is ten times smaller and gravitational constant \( G \) is ten times larg...



Tags:
pw