What is the kinetic energy of the earth rotational motion

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Here is the question which I am struggling on, please help me!

Question: What is the kinetic energy of the Earth's rotational (spin) motion? If someone wants to stop the Earth's spin, how much force does the person (must be super-duper being!) need to use if the force is applied to the equator at the right angle (thereby getting the maximum torque)? Hint: treat Earth as a solid sphere and find the appropriate moment of inertia.

If possible just a brief explanation how you got the answer? Please provide each step and detailed calculation. Thanks.

Reference no: EM13694860

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