Escape velocity of a projectile from the Earth, =
Projection velocity of the projectile, =
Mass of the projectile =
Velocity of the projectile far away from the Earth =
Total energy of the projectile on the Earth =
Gravitational potential energy of the projectile far away from the Earth is zero.
Total energy of the projectile far away from the Earth=
From the law of conservation of energy, we have
=
=
=
=
= =
Figures 9.20(a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why ?
Escape speed is the minimum speed, which is required by the object to escape from the gravitational influence of a plannet. Escape speed for Earth’s surface is 11,186 m/sec.
The formula for escape speed is given below:
ve = (2GM / r)1/2
where ,
ve = Escape Velocity
G = Universal Gravitational Constant
M = Mass of the body to be escaped from
r = Distance from the centre of the mass