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If theta is considered small in problems 
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#1
May1012, 09:27 AM

P: 378

we know when theta is considered small enough, sin(theta) is approximately equal to theta. Ok, the question is what happens to theta dot(the time derivative of theta)?



#2
May1012, 09:36 AM

Mentor
P: 11,589

If [itex]\theta[/itex] is small all the time, the timederivative of [itex]sin(\theta)[/itex] is approximately the timederivative of [itex]\theta[/itex].



#3
May1012, 10:35 AM

P: 378

thanks



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