The Earth is revolving around sun with an angular velocity w inan orbit of radius D and rotating around its own axis with an angular velocityw' . What ios its total kinetic energy?As earth is a sphere and different particles are at different distances from the axis of the sun, how we can consider the c.m velocity of the earth ? y cant we apply parallel axis theorem to get the answer as 0.5(0.4MR2+MD2)w2+0.5 (0.4MR2)w'2

sateesh babu rayala , 15 Years ago

Grade 12