An earth satellite is revolving in a circular orbit of radiusawith velocityv0. There is a gun in the satellite and is aimed directly towards the earth. A bullet is fired from the gun with muzzle velocityNeglecting resistance offered by cosmic dust and recoil of gun, the maximum and minimum distance of bullet from the centre of earth during its subsequent motion isnaandFind the value ofn.Correct answer is '2'. Can you explain this answer?

Question

Answer

Orbital speed of satellite is

From conservation of angular momentum at P and Q,

From conservation of mechanical energy at P and Q, we have

Substituting values of v and v₀ from Eqs. (i) and (ii), we get

Hence, the maximum and minimum distance are 2a and 2a/3 respectively.
The correct answer is: 2

Similar Physics Doubts

A particle of mass m is thrown upward with velocity V and there is retarding air resistance proportional to the square of the velocity with proportionality constant K. If the particle attains a maximum height after time t and g is the gravitational acceleration, what is the velocity?

Square root of side a is pulled out of constant perpendicular magnetic field b with constant velocity v if velocity is parallel to one of its sides and resistance of loop is are the work done in process given by?

Square root of side a is pullout of constant perpendicular magnetic field b with a constant velocity v if direction of velocity is parallel to one of its sides and resistance of loop is are work done in the process is zero or not?

For the network of resistance shown in the figure the equivalent resistance of the network between the pointsA andBis 18ohm. The value of unknown resistance R(Ω)is : Correct answer is '16'. Can you explain this answer?

Top Courses for Physics

Suggested Free Tests

Related Content

Schools

Competitive Examinations

Quick Access Links

Technical Exams