- #1
colton4286
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The Question:
Calculate the kinetic energy (KE) that the Earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the Earth is a uniform sphere and that its path arond the sun is circular. For comparison, the total energy used in the U.S. in one year is about 9.3 X 10^19 J.
I know that the KE of a rigid object is 1/2*(moment of inertia)*(angular vel.)^2 but how to go solve for KE w/o given any of this info?
Calculate the kinetic energy (KE) that the Earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the Earth is a uniform sphere and that its path arond the sun is circular. For comparison, the total energy used in the U.S. in one year is about 9.3 X 10^19 J.
I know that the KE of a rigid object is 1/2*(moment of inertia)*(angular vel.)^2 but how to go solve for KE w/o given any of this info?