Recent content by ingy489

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    How Long Does It Take for a Turbine to Reach Operating Speed?

    Homework Statement During startup of a power plant, a turbine accelerates from rest at 0.43 \rm {rad/s^2}.How long does it take to reach its 3200 \rm {rpm} operating speed? How many revolutions does it make during this time? Homework Equations The Attempt at a Solution
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    Rotational Energy: Humanity's 10^13W Impact on Day Length

    Homework Statement Humanity uses energy at the rate of about 10^{13} \rm W.If we found a way to extract this energy from Earth's rotation, how long would it take before the length of the day increased by 1 minute? Express your answer using one significant figure. Homework Equations...