Planet-X has a mass of 5.49x1024 kg and a radius of 8410 km. What is the First Cosmic Speed i.e. the speed of a satellite on a low lying circular orbit around this planet? (Planet-X doesn't have any atmosphere.) 6.60 km/s You are correct. Your receipt no. is 157-1229 ▸ Previous Tries What is the Second Cosmic Speed i.e. the minimum speed required for a satellite in order to break free permanently from the planet? 7.76km/s Submit Answer Incorrect. Tries 3/12 Previous Tries If the period of rotation of the planet is 19.5 hours, then what is the radius of the synchronous orbit of a satellite? Submit Answer Tries 0/12
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
Step by step
Solved in 2 steps with 2 images
