Chapter 8. Rotational kinetic energy of a rigid object (8-7)

Question

IrxNxR8V4jQhmLsfiS5YdJoUsA52p6c5KLQKUmm8BhjSNdgx2A9cEHl1ADAWxm1rbQBHdX1ZtSoalm9SxNq0ebDj6oZr2PqqseH1rD2oO0kWF3H6
{"title":"Rotational kinetic energy of a rigid body spinning around an axis","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"2,22,36,59\"}]"} {"title":"Moment of inertia of the object for that rotation axis","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"118,11,119,13\"},{\"shape\":\"rect\",\"coords\":\"235,26,251,60\"}]"} {"title":"Angular speed of the object","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"255,34,284,64\"}]"}

Question

L8On+P5oXZkpKTr4sP7YtK2Wu+tkd2CEcp5etLFDFQN1q3MU3re8b7OW0pGUbUTTpAVx/GmfDJX+4apN0V4JjGql13LNF+WY
{"title":"Rotational kinetic energy of a rigid body spinning around an axis","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"2,22,36,59\"}]"} {"title":"Moment of inertia of the object for that rotation axis","description":"Correct!","type":"correct","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"118,11,119,13\"},{\"shape\":\"rect\",\"coords\":\"235,26,251,60\"}]"} {"title":"Angular speed of the object","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"255,34,284,64\"}]"}

Question

DCz8d4bBs9IOQYBgRnu1CyRXgBV6LTpilkqzTC8TgpxMBsEq32wdeyQLj3I=
{"title":"Rotational kinetic energy of a rigid body spinning around an axis","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"2,22,36,59\"}]"} {"title":"Moment of inertia of the object for that rotation axis","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"118,11,119,13\"},{\"shape\":\"rect\",\"coords\":\"235,26,251,60\"}]"} {"title":"Angular speed of the object","description":"Correct!","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"255,34,284,64\"}]"}

Review

We can use Equation 8-6 to write the expression for rotational kinetic energy, Equation 8-5, in terms of the moment of inertia: