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sateesh babu rayala Grade: 12
        

The earth of mass m , radius r  is revolving around sun in an orbit of radius D with an angular velocity ω and rotating around itself with an angular velocity ω' . What is the total kinetic energy of the earth ?

8 years ago

Answers : (1)

Askiitian.Expert Rajat
24 Points
										

Hi,


It sometimes is convenient to split the total kinetic energy of a body into the sum of the body's center-of-mass translational kinetic energy and the energy of rotation around the center of mass (rotational energy):


 E_k = E_t + E_r \,

where:


Ek is the total kinetic energy
Et is the translational kinetic energy
Er is the rotational energy or angular kinetic energy in the rest frame

=.5mω2D+ .5I(ω')2


where, I = moment of inertia

8 years ago
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