question_answer

The primary disturbing force due to inertia of reciprocating parts of mass m at radius r moving with an angular velocity \[\omega \] is given by:

A) \[m{{\omega }^{2}}r\sin \theta \]                      

B) \[m{{\omega }^{2}}r\cos \theta \]

C) \[m{{\omega }^{2}}r\frac{\sin 2\theta }{n}\]                 

D) \[m{{\omega }^{2}}r\frac{\cos 2\theta }{n}\]