with mass m, period Ti = 30 days, and radius ri = 1E4 km collapses into a neutron star with a radius of rf = 3 km. Our goal will be to determine the period Tf of the neutron star. Useful formulae: Li=Lf; L=lw; w=2πf=2π/T; Isphere=2/5mr2 How much angular momentum Li does the star have before it collapses? Group of answer choices: A)riTi
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.
A star with mass m, period Ti = 30 days, and radius ri = 1E4 km collapses into a neutron star with a radius of rf = 3 km. Our goal will be to determine the period Tf of the neutron star. Useful formulae: Li=Lf; L=lw; w=2πf=2π/T; Isphere=2/5mr2
B)mr2i
C)mivi
D)Iiwi
Group of answer choices
A)riTi
B)mr2i
C)2π/Ti
D)2πfi
Suppose we model the star as a solid sphere of radius ri with moment of inertia 2/5mr2i (a good assumption). What does our description of Li read now?
A)2/5mr2i(2πfi)
B)2/5mr2i(2π/Ti)
C)2/5mr2i(mr2i)
D)2/5mr2i(riTi)
Group of answer choices
A)mfvf
B)rfTf
C)I fwf
D)mr2f
Group of answer choices
A)2π/Tf
B)mr2f
C)2πf f
D)rfTf
Group of answer choices
A)2/5mr2f(2πff)
B)25mr2f(rfTf)
C)25mr2f(mr2f)
D)2/5mr2f(2π/Tf)
Group of answer choices
A)2/5Ti
B)πr2f
C)Ti(rf/ri)2
D)2πTi
Group of answer choices
Group of answer choices
Group of answer choices
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