Rotating a space station can simulate gravity for its occupants. A ring-shaped structure with a radius about the length a football field could be spun a few times a minute to achieve a sensation of normal gravity, comfortable for human habitation. Consider a ring space station, rotating counter-clockwise at 0.3141 rad/s (the figure says 0.6282 rad/s - please ignore that value! It takes too much time to fiddle with all these figures). O Fig. 1-a spinning space station. -0.6282 rad/s a. What is that angular velocity, 0.3141 rad/s, in revolutions per minute? Show your work, don't just punch this into google. b. If the centripetal acceleration at the rim of the station is 9.81m/s², what is the radius of the structure? c. What is the linear, tangential velocity v of a chunk of stuff on the rim of the station, at the radius you found in (b)?
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.
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