A potter\'s wheel with a moment of inertia of 8.0 kg-m2 has 5.0N-m applied to it

Question

A potter's wheel with a moment of inertia of 8.0 kg-m2 has 5.0N-m applied to it.
It starts from rest. 10. s later it has gained what kineticenergy? Pick on answer--->A) 44. J B) 78. J C) 1.6kJ D) 0.12 kJ   E) 53. J Please give step by step instructions with solution for 14points A potter's wheel with a moment of inertia of 8.0 kg-m2 has 5.0N-m applied to it.
It starts from rest. 10. s later it has gained what kineticenergy? Pick on answer--->A) 44. J B) 78. J C) 1.6kJ D) 0.12 kJ   E) 53. J Please give step by step instructions with solution for 14points Please give step by step instructions with solution for 14points

Explanation / Answer

moment of inertia I = 8.0 kg-m2
torque = 5.0 N-m initial angular speed w = 0 rad / s time t = 10 s angular accleration = / I                                 =0.625 rad / s ^ 2 angular speed after 10 s is w ' = w + t                                                =6.25 rad / s kinetic energy after 10 s is E = ( 1/ 2) I w' ^2                                             = 156.25 J                                      

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