A spaceship is sent to investigate a planet of mass M and radius R. While hanging motionless in space at a distance 5R from the centre of the planet, the spaceship fires an instrument package of mass m, which is much smaller than the mass of the spaceship. The angle θ for which the package just grazes the surface of the planet is
![](https://sahay.guru/wp-content/uploads/2020/08/q84-s1-1024x682.jpg)
![](https://sahay.guru/wp-content/uploads/2020/08/q84-s2.jpg)