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Title [Harry Kim] Torque
AP Physics C Mechanics 24
Author seu*** Date Posted 2018-01-06 오후 6:49:33
안녕하세요

24-1번에 choice e에 force가 2N이니까 angular acceleration은 1/8이아니라 1/4아닌가요? 

감사합니다
2018-01-07 오후 5:54:18

(e)

Center of mass 에 대한 total Torque = (2 N) x (2 m) x sin(30) x 2 = 4 m*N

Center of mass 에 대한 rotational inertia = (2 kg) x (2 m)^2 x 2 = 16 kg*m^2

 

그래서 angular acceleration 은 4/16 = 1/4 rad/s^2 맞습니다. 

 

지적 감사합니다. 

 
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